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World heavyweight boxing championship records and statistics

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"Heavyweight championship boxing" redirects here. For the video game known in the US by that name, see Boxing (1990 video game).

Below is a list of world heavyweight boxing championship records and statistics.

Championship recognition

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As per International Boxing Hall Of Fame:[1][2][3][4][5]

1884–2024

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  • Champions were recognized by public acclamation. A champion in that era was a fighter who had a notable win over another fighter and kept winning afterward. It was a lineal championship. The only way to win the championship was to beat the current champion. Retirements or disputed results could lead to a championship being split among several men for periods of time. With only minor exceptions, the heavyweight division remained free from dual title-holders until the 1960s. For an early example, see the 1896 World Heavyweight Championship.

Sanctioning organizations: 1921–present

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  •  
    WBA world championship
  •  
    WBC world championship
  •  
    IBF world championship
  •  
    WBO world championship
  •  
    The Ring world championship

Gradually, the role of recognizing champions in the division evolved into a more formal affair, with public acclamation being supplemented (or in some cases, contradicted) by recognition by one or more athletic commissions, sanctioning organizations, or a combination of them. The International Boxing Hall of Fame (IBHOF) recognizes these organizations as major in boxing:

  • The New York State Athletic Commission (NYSAC). A governmental entity initially formed for the purpose of regulating boxing in the State of New York, thanks to New York's place as the epicenter of boxing from the 1930s through 1950s, the NYSAC expanded its reach to sanctioning championship bouts. This practice continued until, like the IBU, the NYSAC became a member of the WBC.
  • The National Boxing Association (NBA) was organized in 1921. In 1962, the organization was renamed the World Boxing Association (WBA).
  • The WBC was organized in 1963.
  • The IBF, which was founded in 1983 by the members of the United States Boxing Association after the USBA withdrew from membership in the WBA.
  • The WBO, founded in 1988. The IBHOF started recognizing WBO as a major organization no later than August 23, 1997.[nb 1]

There are also titles that are not considered major, but play a significant role in legitimizing the heavyweight champion:

  • The Ring began awarding championship belts in 1922, stopped giving belts to world champions in the 1990s, then reintroduced their title in 2002, and ignored the current ongoing world championship lineage. Under the original version of the policy, you could win the title by either defeating the reigning champion or winning a box-off between the magazine's No. 1 and No. 2 (occasionally No. 3) ranked contenders. A fighter could not be stripped of the title unless he lost or retired. Since May 2012, under the new policy, The Ring title can be awarded when the No. 1 and No. 2 contenders face each other or when either of them faces No. 3, No. 4 or No. 5 contender. In addition, the title can be taken away by losing the fight, not scheduling a fight for 18 months, not scheduling a fight with a top 5 contender for two years, or retiring.[6]

Most opponents beaten in title fights

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Keys:

  Active title reign
  Reign has ended
  • Note: Secondary championships are not included.

All championship reigns

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Map of countries, number of beaten opponents in world heavyweight boxing championship fights reached by country citizen (as of December 2022). Note: secondary championships are not included

The list does not include The Ring and lineal championship fights after July 2, 1921.

Pos. Name Reign began-ended Recognition Beaten
opponents 		Fights
1. Wladimir Klitschko 1. October 14, 2000 — March 8, 2003
2. April 22, 2006 — November 28, 2015		 1. WBO
2. WBA, IBF, WBO		 23 [7]
2. Joe Louis June 22, 1937 — March 1, 1949 NYSAC, NBA 22 [8][9]
3. Muhammad Ali 1. February 25, 1964 – March 11, 1969
2. October 30, 1974 — February 15, 1978
3. September 15, 1978 — October 18, 1979		 1. WBA, WBC
2. WBA, WBC
3. WBA		 21 [10]
4. Larry Holmes June 9, 1978 — September 21, 1985 WBC, IBF 20 [11]
5. Lennox Lewis 1. December 14, 1992 — September 24, 1994
2. February 7, 1997 — April 22, 2001
3. November 17, 2001 — February 6, 2004		 1. WBC
2. WBA, WBC, IBF
3. WBC, IBF		 15 [12]
5. Vitali Klitschko 1. June 26, 1999 — April 1, 2000
2. April 24, 2004 — November 9, 2005
3. October 11, 2008 — December 15, 2013		 1. WBO
2. WBC
3. WBC		 15 [13]
7. Mike Tyson 1. November 22, 1986 — February 11, 1990
2. March 16, 1996 — November 9, 1996		 1. WBA, WBC, IBF
2. WBA, WBC		 11 [14]
7. Tommy Burns February 23, 1906 — December 26, 1908 lineal 11 [15]
9. Joe Frazier March 4, 1968 — January 22, 1973 NYSAC, WBA, WBC 10 [16]
10. Evander Holyfield 1. October 25, 1990 — November 13, 1992
2. November 6, 1993 — April 22, 1994
3. November 9, 1996 — November 13, 1999
4. August 12, 2000 — March 3, 2001		 1. WBA, WBC, IBF
2. WBA, IBF
3. WBA, IBF
4. WBA		 9 [17]
10. Anthony Joshua 1. April 9, 2016 — June 1, 2019
2. December 7, 2019 — September 25, 2021		 WBA, IBF, WBO 9 [18]
12. Ezzard Charles September 27, 1950 — July 18, 1951 NBA, NYSAC 8 [19]
12. Deontay Wilder January 17, 2015 — February 22, 2020 WBC 8 [20]
14. Floyd Patterson 1. November 30, 1956 — June 26, 1959
2. June 20, 1960 — September 25, 1962		 NYSAC, NBA 7 [21]
15. Jack Johnson December 26, 1908 — April 5, 1915 lineal 6 [22]
15. Jack Dempsey July 4, 1919 — September 23, 1926 lineal-to-NBA and NYSAC 6 [23]
15. James J. Jeffries June 9, 1899 — May 13, 1905 lineal 6 [24]

All championship reigns of undisputed champions/lineal champions/The Ring champions

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Map of countries, number of beaten opponents in world heavyweight boxing championship fights reached by country citizen - undisputed champion (July 2, 1921-present), lineal champion (August 29, 1885–July 2, 1921), The Ring champion; as of December 2022. Note: secondary championships are not included

The list does not include The Ring and lineal championship fights after July 2, 1921, although it only includes heavyweight champions that captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or The Ring championship.

Pos. Name Reign began-ended Recognition Beaten opponents Fights
1. Wladimir Klitschko 1. October 14, 2000 — March 8, 2003
2. April 22, 2006 — November 28, 2015		 1. WBO
2. WBA, IBF, WBO		 23 [7]
2. Joe Louis June 22, 1937 — March 1, 1949 NYSAC, NBA 22 [8][9]
3. Muhammad Ali 1. February 25, 1964 – March 11, 1969
2. October 30, 1974 — February 15, 1978
3. September 15, 1978 — October 18, 1979		 1. WBA, WBC
2. WBA, WBC
3. WBA		 21 [10]
4. Larry Holmes June 9, 1978 — September 21, 1985 WBC, IBF 20 [11]
5. Lennox Lewis 1. December 14, 1992 — September 24, 1994
2. February 7, 1997 — April 22, 2001
3. November 17, 2001 — February 6, 2004		 1. WBC
2. WBA, WBC, IBF
3. WBC, IBF		 15 [12]
5. Vitali Klitschko 1. June 26, 1999 — April 1, 2000
2. April 24, 2004 — November 9, 2005
3. October 11, 2008 — December 15, 2013		 1. WBO
2. WBC
3. WBC		 15 [13]
7. Mike Tyson 1. November 22, 1986 — February 11, 1990
2. March 16, 1996 — November 9, 1996		 1. WBA, WBC, IBF
2. WBA, WBC		 11 [14]
7. Tommy Burns February 23, 1906 — December 26, 1908 lineal 11 [15]
9. Joe Frazier March 4, 1968 — January 22, 1973 NYSAC, WBA, WBC 10 [16]
10. Evander Holyfield 1. October 25, 1990 — November 13, 1992
2. November 6, 1993 — April 22, 1994
3. November 9, 1996 — November 13, 1999
4. August 12, 2000 — March 3, 2001		 1. WBA, WBC, IBF
2. WBA, IBF
3. WBA, IBF
4. WBA		 9 [17]
11. Ezzard Charles September 27, 1950 — July 18, 1951 NBA, NYSAC 8 [19]
12. Floyd Patterson 1. November 30, 1956 — June 26, 1959
2. June 20, 1960 — September 25, 1962		 NYSAC, NBA 7 [21]
12. Jack Johnson December 26, 1908 — April 5, 1915 lineal 7 [22]
14. James J. Jeffries June 9, 1899 — May 13, 1905 lineal 6 [24]
14. Jack Dempsey July 4, 1919 — September 23, 1926 lineal-to-NBA and NYSAC 6 [23]

Championship reigns of undisputed/lineal/The Ring champions with undisputed/lineal/The Ring/unified championships, victories over champions

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Diagram that represents top 26 world heavyweight champions by number of opponents beaten for the world heavyweight title (as of 19 May 2024)

The list does not include The Ring and lineal championship fights after July 2, 1921, although it only includes heavyweight champions that captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or The Ring championship.

The list only includes title reigns during which the champion:

  • has won undisputed championship (July 2, 1921–present), The Ring championship, lineal championship (August 29, 1885–July 2, 1921)
  • held at least two major world heavyweight titles[25][26][27] simultaneously
  • defeated a fighter that either had to drop his own world title prior to the fight due to organization's championship policy or would become world heavyweight champion while the winner's reign was still active

As of November 25, 2024.

Pos. Name Reign began-ended Recognition Additional recognition Beaten champions (recognition) Beaten opponents Fights
1. Wladimir Klitschko 1. October 14, 2000 — March 8, 2003
2. April 22, 2006 — November 28, 2015		 1. WBO
2. unified
2. The Ring		 1. Chris Byrd (IBF)

 23 [7][28]
2. Joe Louis June 22, 1937 — March 1, 1949 undisputed The Ring 22 [8][9]
3. Muhammad Ali 1. February 25, 1964 – March 11, 1969
2. October 30, 1974 — February 15, 1978
3. September 15, 1978 — October 18, 1979		 1. undisputed
2. undisputed
3. WBA		 The Ring 21 [10]
4. Larry Holmes June 9, 1978 — September 21, 1985 WBC-to-IBF The Ring Mike Weaver (WBA),
Tim Witherspoon (WBC)		 20 [11][29][30]
5. Lennox Lewis 1. February 7, 1997 — April 22, 2001
2. November 17, 2001 — February 6, 2004		 1. undisputed
2. unified
2. The Ring		 1. Evander Holyfield (WBA)

 12 [12][17]
6. Mike Tyson 1. November 22, 1986 — February 11, 1990
2. March 16, 1996 — November 9, 1996		 1. undisputed
2. unified		 1. The Ring

 11 [14]
6. Tommy Burns February 23, 1906 — December 26, 1908 lineal lineal 11 [15]
8. Joe Frazier March 4, 1968 — January 22, 1973 undisputed The Ring 10 [16]
9. Evander Holyfield 1. October 25, 1990 — November 13, 1992
2. November 6, 1993 — April 22, 1994
3. November 9, 1996 — November 13, 1999		 1. undisputed
2. unified
3. unified		 8 [17]
9. Ezzard Charles September 27, 1950 — July 18, 1951 undisputed The Ring 8 [19]
11. Floyd Patterson 1. November 30, 1956 — June 26, 1959
2. June 20, 1960 — September 25, 1962		 undisputed The Ring 7 [21]
12. Jack Johnson December 26, 1908 — April 5, 1915 lineal lineal 6 [22]
12. James J. Jeffries June 9, 1899 — May 13, 1905 lineal lineal 6 [24]
12. Jack Dempsey July 4, 1919 — September 23, 1926 undisputed The Ring 6 [23]
15. Rocky Marciano September 23, 1952 — April 27, 1956 undisputed The Ring 5 [31]
15. George Foreman 1. January 22, 1973 — October 30, 1974
2. November 4, 1994 — June 29, 1995		 1. undisputed
2. unified		 1. The Ring

 5 [32]
17. Tyson Fury 1. November 28, 2015 — October 12, 2016
2. February 22, 2020 — May 18, 2024		 1. unified
2. WBC		 1. The Ring
2. The Ring		 4 [33]
18. Primo Carnera June 29, 1933 – June 14, 1934 undisputed The Ring 3 [34]
18. Riddick Bowe November 13, 1992 — November 6, 1993 undisputed 3 [35]
18. Oleksandr Usyk September 25, 2021 – present undisputed The Ring Daniel Dubois (IBF) 3 [36]
21. James J. Corbett September 7, 1892 – March 17, 1897 lineal lineal 2 [37]
21. Jess Willard April 5, 1915 — July 4, 1919 lineal lineal 2 [38]
21. Max Schmeling June 12, 1930 – January 7, 1931 undisputed The Ring 2 [39]
21. Vitali Klitschko April 24, 2004 — November 9, 2005 WBC The Ring Corrie Sanders (WBO) 2 [13][40]
21. Gene Tunney September 23, 1926 – July 31, 1928 undisputed The Ring 2 [41]
21. Michael Spinks September 21, 1985 — February 19, 1987 IBF The Ring 2 [42]
27. John L. Sullivan August 29, 1885 — September 7, 1892 lineal lineal 1 [43]
27. Bob Fitzsimmons March 17, 1897 — June 9, 1899 lineal lineal 1 [44]
27. Marvin Hart July 3, 1905 — February 23, 1906 lineal lineal 1 [45]
27. Max Baer June 14, 1934 — June 13, 1935 undisputed The Ring 1 [46]
27. James J. Braddock June 13, 1935 — June 22, 1937 undisputed The Ring 1 [47]
27. Jersey Joe Walcott July 18, 1951 — September 23, 1952 undisputed The Ring 1 [48]
27. Ingemar Johansson June 26, 1959 — June 20, 1960 undisputed The Ring 1 [49]
27. Sonny Liston September 25, 1962 — February 25, 1964 undisputed The Ring 1 [50]
27. Leon Spinks February 15, 1978 — September 15, 1978 undisputed The Ring 1 [51]
27. Buster Douglas February 11, 1990 — October 25, 1990 undisputed 1 [52]

Most wins in title fights

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Keys:

  Active title reign
  Reign has ended

All championship reigns

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The list does not include The Ring and lineal championship fights after July 2, 1921.

  • Note: Secondary championships are not included.
Pos. Name Reign began-ended Recognition Title fight wins Fights
1. Joe Louis June 22, 1937 — March 1, 1949 NYSAC, NBA 27 [8][9]
2. Wladimir Klitschko 1. October 14, 2000 — March 8, 2003
2. April 22, 2006 — November 28, 2015		 1. WBO
2. WBA, IBF, WBO		 25 [7]
3. Muhammad Ali 1. February 25, 1964 – March 11, 1969
2. October 30, 1974 — February 15, 1978
3. September 15, 1978 — October 18, 1979		 1. WBA, WBC
2. WBA, WBC
3. WBA		 22 [10]
4. Larry Holmes June 9, 1978 — September 21, 1985 WBC, IBF 20 [11]
5. Lennox Lewis 1. December 14, 1992 — September 24, 1994
2. February 7, 1997 — April 22, 2001
3. November 17, 2001 — February 6, 2004		 1. WBC
2. WBA, WBC, IBF
3. WBC, IBF		 15 [12]
5. Vitali Klitschko 1. June 26, 1999 — April 1, 2000
2. April 24, 2004 — November 9, 2005
3. October 11, 2008 — December 15, 2013		 1. WBO
2. WBC
3. WBC		 15 [13]
7. Tommy Burns February 23, 1906 — December 26, 1908 lineal 13 [15]
8. Mike Tyson 1. November 22, 1986 — February 11, 1990
2. March 16, 1996 — November 9, 1996		 1. WBA, WBC, IBF
2. WBA, WBC		 12 [14]
9. Joe Frazier March 4, 1968 — January 22, 1973 NYSAC, WBA, WBC 10 [16]
9. Deontay Wilder January 17, 2015 — February 22, 2020 WBC 10 [20]
9. Evander Holyfield 1. October 25, 1990 — November 13, 1992
2. November 6, 1993 — April 22, 1994
3. November 9, 1996 — November 13, 1999
4. August 12, 2000 — March 3, 2001		 1. WBA, WBC, IBF
2. WBA, IBF
3. WBA, IBF
4. WBA		 10 [17]
12. Ezzard Charles September 27, 1950 — July 18, 1951 NBA, NYSAC 9 [19]
12. Anthony Joshua 1. April 9, 2016 – June 1, 2019
2. December 7, 2019 – September 25, 2021		 WBA, IBF, WBO 9 [18]
14. Floyd Patterson 1. November 30, 1956 — June 26, 1959
2. June 20, 1960 — September 25, 1962		 NYSAC, NBA 8 [21]
14. James J. Jeffries June 9, 1899 — May 13, 1905 lineal 8 [24]

All championship reigns of undisputed champions/lineal champions/The Ring champions

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The list does not include The Ring and lineal championship fights after July 2, 1921, although it only includes heavyweight champions that captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or The Ring championship.

Pos. Name Reign began-ended Recognition Title fight wins Fights
1. Joe Louis June 22, 1937 — March 1, 1949 NYSAC, NBA 27 [8][9]
2. Wladimir Klitschko 1. October 14, 2000 — March 8, 2003
2. April 22, 2006 — November 28, 2015		 1. WBO
2. WBA, IBF, WBO		 25 [7]
3. Muhammad Ali 1. February 25, 1964 – March 11, 1969
2. October 30, 1974 — February 15, 1978
3. September 15, 1978 — October 18, 1979		 1. WBA, WBC
2. WBA, WBC
3. WBA		 22 [10]
4. Larry Holmes June 9, 1978 — September 21, 1985 WBC, IBF 20 [11]
5. Lennox Lewis 1. December 14, 1992 — September 24, 1994
2. February 7, 1997 — April 22, 2001
3. November 17, 2001 — February 6, 2004		 1. WBC
2. WBA, WBC, IBF
3. WBC, IBF		 15 [12]
5. Vitali Klitschko 1. June 26, 1999 — April 1, 2000
2. April 24, 2004 — November 9, 2005
3. October 11, 2008 — December 15, 2013		 1. WBO
2. WBC
3. WBC		 15 [13]
7. Tommy Burns February 23, 1906 — December 26, 1908 lineal 13 [15]
8. Mike Tyson 1. November 22, 1986 — February 11, 1990
2. March 16, 1996 — November 9, 1996		 1. WBA, WBC, IBF
2. WBC, WBA		 12 [14]
9. Joe Frazier March 4, 1968 — January 22, 1973 NYSAC, WBA, WBC 10 [16]
9. Evander Holyfield 1. October 25, 1990 — November 13, 1992
2. November 6, 1993 — April 22, 1994
3. November 9, 1996 — November 13, 1999
4. August 12, 2000 — March 3, 2001		 1. WBA, WBC, IBF
2. WBA, IBF
3. WBA, IBF
4. WBA		 10 [17]
11. Ezzard Charles September 27, 1950 — July 18, 1951 NBA, NYSAC 9 [19]
12. Floyd Patterson 1. November 30, 1956 — June 26, 1959
2. June 20, 1960 — September 25, 1962		 NYSAC, NBA 8 [21]
12. James J. Jeffries June 9, 1899 — May 13, 1905 lineal 8 [24]
14. Rocky Marciano September 23, 1952 — April 27, 1956 NYSAC, NBA 7 [31]
15. Jack Dempsey July 4, 1919 — September 23, 1926 NYSAC, NBA 6 [23]
15. Jack Johnson December 26, 1908 — April 5, 1915 lineal 6 [22]

Championship reigns of undisputed/lineal/The Ring champions with undisputed/lineal/The Ring/unified championships, victories over champions

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The list does not include The Ring and lineal championship fights after July 2, 1921, although it only includes heavyweight champions that captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or The Ring championship.

The list only includes title reigns during which the champion:

  • has won undisputed championship (July 2, 1921–present), The Ring championship, lineal championship (August 29, 1885–July 2, 1921)
  • held at least two major world heavyweight titles[25][26][27] simultaneously
  • defeated a fighter that either had to drop his own world title prior to the fight due to organization's championship policy or would become world heavyweight champion while the winner's reign was still active

As of November 25, 2024.

Pos. Name Reign began-ended Recognition Additional recognition Beaten champions (recognition) Title fight wins Fights
1. Joe Louis June 22, 1937 — March 1, 1949 undisputed The Ring 27 [8][9]
2. Wladimir Klitschko 1. October 14, 2000 — March 8, 2003
2. April 22, 2006 — November 28, 2015		 1. WBO
2. unified
2. The Ring		 1. Chris Byrd (IBF)

 25 [7][28]
3. Muhammad Ali 1. February 25, 1964 – March 11, 1969
2. October 30, 1974 — February 15, 1978
3. September 15, 1978 — October 18, 1979		 1. undisputed
2. undisputed
3. WBA		 1. The Ring
2. The Ring
3. The Ring		 22 [10]
4. Larry Holmes June 9, 1978 — September 21, 1985 WBC-to-IBF The Ring Mike Weaver (WBA),
Tim Witherspoon (WBC)		 20 [11][29][30]
5. Tommy Burns February 23, 1906 — December 26, 1908 lineal lineal 13 [15]
6. Lennox Lewis 1. February 7, 1997 — April 22, 2001
2. November 17, 2001 — February 6, 2004		 1. undisputed
2. unified
2. The Ring		 1. Evander Holyfield (WBA)

 12 [12][17]
6. Mike Tyson 1. November 22, 1986 — February 11, 1990
2. March 16, 1996 — November 9, 1996		 1. undisputed
2. unified		 1. The Ring

 12 [14]
8. Joe Frazier March 4, 1968 — January 22, 1973 unified The Ring 10 [16]
9. Evander Holyfield 1. October 25, 1990 — November 13, 1992
2. November 6, 1993 — April 22, 1994
3. November 9, 1996 — November 13, 1999		 1. undisputed
2. unified
3. unified		 9 [17]
9. Ezzard Charles September 27, 1950 — July 18, 1951 undisputed The Ring 9 [19]
11. Floyd Patterson 1. November 30, 1956 — June 26, 1959
2. June 20, 1960 — September 25, 1962		 undisputed The Ring 8 [21]
11. James J. Jeffries June 9, 1899 — May 13, 1905 lineal lineal 8 [24]
13. Rocky Marciano September 23, 1952 — April 27, 1956 undisputed The Ring 7 [31]
14. Jack Dempsey July 4, 1919 — September 23, 1926 undisputed The Ring 6 [23]
14. Jack Johnson December 26, 1908 — April 5, 1915 lineal lineal 6 [22]
16. George Foreman 1. January 22, 1973 — October 30, 1974
2. November 4, 1994 — June 29, 1995		 1. undisputed
2. unified		 1. The Ring

 5 [32]
16. Tyson Fury 1. November 28, 2015 — October 12, 2016
2. February 22, 2020 — May 19, 2024		 1. unified
2. WBC		 1. The Ring
2. The Ring		 5 [33]
18. Oleksandr Usyk September 25, 2021 — present undisputed The Ring Daniel Dubois (IBF) 4 [36]
19. Primo Carnera June 29, 1933 – June 14, 1934 undisputed The Ring 3 [34]
19. Riddick Bowe November 13, 1992 — November 6, 1993 undisputed 3 [35]
19. Gene Tunney September 23, 1926 – July 31, 1928 undisputed The Ring 3 [41]
19. Michael Spinks September 21, 1985 — February 19, 1987 IBF The Ring 3 [42]
23. James J. Corbett September 7, 1892 – March 17, 1897 lineal lineal 2 [37]
23. Jess Willard April 5, 1915 — July 4, 1919 lineal lineal 2 [38]
23. Max Schmeling June 12, 1930 – January 7, 1931 undisputed The Ring 2 [39]
23. Vitali Klitschko April 24, 2004 — November 9, 2005 WBC The Ring Corrie Sanders (WBO) 2 [13][40]
23. Jersey Joe Walcott July 18, 1951 — September 23, 1952 undisputed The Ring 2 [48]
23. Sonny Liston September 25, 1962 — February 25, 1964 undisputed The Ring 2 [50]
29. John L. Sullivan August 29, 1885 — September 7, 1892 lineal lineal 1 [43]
29. Bob Fitzsimmons March 17, 1897 — June 9, 1899 lineal lineal 1 [44]
29. Marvin Hart July 3, 1905 — February 23, 1906 lineal lineal 1 [45]
29. Max Baer June 14, 1934 — June 13, 1935 undisputed The Ring 1 [46]
29. James J. Braddock June 13, 1935 — June 22, 1937 undisputed The Ring 1 [47]
29. Ingemar Johansson June 26, 1959 — June 20, 1960 undisputed The Ring 1 [49]
29. Leon Spinks February 15, 1978 — September 15, 1978 undisputed The Ring 1 [51]
29. Buster Douglas February 11, 1990 — October 25, 1990 undisputed 1 [52]

Most opponents title was successfully defended against during one reign

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Keys:

  Active title reign
  Reign has ended
  • Note: Secondary championships are not included.

All championship reigns

edit

The list does not include The Ring and lineal championship fights after July 2, 1921.

Pos. Name Reign began-ended Recognition Beaten opponents Fights
1. Joe Louis June 22, 1937 — March 1, 1949 NYSAC, NBA 21 [8][9]
2. Larry Holmes June 9, 1978 — September 21, 1985 WBC, IBF 19 [11]
3. Wladimir Klitschko April 22, 2006 — November 28, 2015 WBA, IBF, WBO 18 [7]
4. Tommy Burns February 23, 1906 — December 26, 1908 lineal 11 [15]
5. Muhammad Ali October 30, 1974 — February 15, 1978 WBA, WBC 10 [10]
6. Vitali Klitschko October 11, 2008 - September 8, 2012 WBC 9 [13]
6. Mike Tyson November 22, 1986 — February 11, 1990 WBA, WBC, IBF 9 [14]
6. Joe Frazier March 4, 1968 — January 22, 1973 NYSAC, WBA, WBC 9 [16]
6. Deontay Wilder January 17, 2015 – February 22, 2020 WBC 9 [20]
10. Lennox Lewis February 7, 1997 — April 22, 2001 WBA, WBC, IBF 8 [12]
10. Ezzard Charles September 27, 1950 — July 18, 1951 NBA, NYSAC 8 [19]
12. Anthony Joshua April 9, 2016 – June 1, 2019 WBA, IBF, WBO 6 [18]
12. James J. Jeffries June 9, 1899 — May 13, 1905 lineal 6 [24]
12. Jack Johnson December 26, 1908 — April 5, 1915 lineal 6 [22]
15. Rocky Marciano September 23, 1952 — April 27, 1956 NYSAC, NBA 5 [31]
15. Jack Dempsey July 4, 1919 — September 23, 1926 lineal-to-NBA and NYSAC 5 [23]

Championship reigns with undisputed/lineal/The Ring championships

edit

The list does not include The Ring and lineal championship fights after July 2, 1921, although it only includes title reigns during which the champion captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or The Ring championship.

Pos. Name Reign began-ended Recognition Beaten opponents Fights
1. Joe Louis June 22, 1937 — March 1, 1949 NYSAC, NBA 21 [8][9]
2. Larry Holmes June 9, 1978 — September 21, 1985 WBC, IBF 19 [11]
3. Wladimir Klitschko April 22, 2006 — November 28, 2015 WBA, IBF, WBO 17 [7]
4. Tommy Burns February 23, 1906 — December 26, 1908 lineal 11 [15]
5. Muhammad Ali October 30, 1974 — February 15, 1978 WBA, WBC 10 [10]
6. Mike Tyson November 22, 1986 — February 11, 1990 WBA, WBC, IBF 9 [14]
6. Joe Frazier March 4, 1968 — January 22, 1973 NYSAC, WBA, WBC 9 [16]
8. Lennox Lewis February 7, 1997 — April 22, 2001 WBA, WBC, IBF 8 [12]
8. Ezzard Charles September 27, 1950 — July 18, 1951 NBA, NYSAC 8 [19]
10. James J. Jeffries June 9, 1899 — May 13, 1905 lineal 6 [24]
10. Jack Johnson December 26, 1908 — April 5, 1915 lineal 6 [22]
12. Rocky Marciano September 23, 1952 — April 27, 1956 NYSAC, NBA 5 [31]
12. Jack Dempsey July 4, 1919 — September 23, 1926 lineal-to-NBA and NYSAC 5 [23]

Most consecutive title defenses

edit

Keys:

  Active title reign
  Reign has ended
  • Note: Secondary championships are not included.

All championship reigns

edit

The list does not include The Ring and lineal championship fights after July 2, 1921. For the purpose of this list, successful title defenses that ended in a draw are also included.

Pos. Name Reign began-ended Recognition Title defenses Fights
1. Joe Louis June 22, 1937 — March 1, 1949 NYSAC, NBA 26 [8][9]
2. Larry Holmes June 9, 1978 — September 21, 1985 WBC, IBF 19 [11]
3. Wladimir Klitschko April 22, 2006 — November 28, 2015 WBA, IBF, WBO 18 [7][53]
4. Tommy Burns February 23, 1906 — December 26, 1908 lineal 13 [15]
5. Muhammad Ali October 30, 1974 — February 15, 1978 WBA, WBC 10 [10]
5. Deontay Wilder January 17, 2015 – February 22, 2020 WBC 10 [20]
7. Vitali Klitschko October 11, 2008 - September 8, 2012 WBC 9 [13]
7. Mike Tyson November 22, 1986 — February 11, 1990 WBA, WBC, IBF 9 [14]
7. Joe Frazier March 4, 1968 — January 22, 1973 NYSAC, WBA, WBC 9 [16]
7. Lennox Lewis February 7, 1997 — April 22, 2001 WBA, WBC, IBF 9 [12]
11. Ezzard Charles September 27, 1950 — July 18, 1951 NBA, NYSAC 8 [19]
12. James J. Jeffries June 9, 1899 — May 13, 1905 lineal 7 [24]
13. Rocky Marciano September 23, 1952 — April 27, 1956 NYSAC, NBA 6 [31]
13. Anthony Joshua April 9, 2016 – June 1, 2019 WBA, IBF, WBO 6 [18]
13. Jack Johnson December 26, 1908 — April 5, 1915 lineal 6 [22]

Championship reigns with undisputed/lineal/The Ring championships

edit

The list does not include The Ring and lineal championship fights after July 2, 1921, although it only includes title reigns during which the champion captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or The Ring championship. For the purpose of this list, successful title defenses that ended in a draw are also included.

Pos. Name Reign began-ended Recognition Title defenses Fights
1. Joe Louis June 22, 1937 — March 1, 1949 NYSAC, NBA 26 [8][9]
2. Larry Holmes June 9, 1978 — September 21, 1985 WBC, IBF 19 [11]
3. Wladimir Klitschko April 22, 2006 — November 28, 2015 WBA, IBF, WBO 18 [7]
4. Tommy Burns February 23, 1906 — December 26, 1908 lineal 13 [15]
5. Muhammad Ali October 30, 1974 — February 15, 1978 WBA, WBC 10 [10]
6. Mike Tyson November 22, 1986 — February 11, 1990 WBA, WBC, IBF 9 [14]
6. Joe Frazier March 4, 1968 — January 22, 1973 NYSAC, WBA, WBC 9 [16]
6. Lennox Lewis February 7, 1997 — April 22, 2001 WBA, WBC, IBF 9 [16]
9. Ezzard Charles September 27, 1950 — July 18, 1951 NBA, NYSAC 8 [19]
10. James J. Jeffries June 9, 1899 — May 13, 1905 lineal 7 [24]
11. Rocky Marciano September 23, 1952 — April 27, 1956 NYSAC, NBA 6 [31]
11. Jack Johnson December 26, 1908 — April 5, 1915 lineal 6 [22]
13. Jack Dempsey July 4, 1919 — September 23, 1926 lineal-to-NBA and NYSAC 5 [23]

Longest title reigns

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Keys:

  Active Title Reign
  Reign has ended
  • Note: Secondary championships are not included.

Combined reigns

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All championship reigns

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The list does not include The Ring and lineal championship fights after July 2, 1921.

As of 26 May 2024.

Pos. Name Combined reign Days as
champion 		Number
of reigns 		Title recognition
1. Wladimir Klitschko 12 years, 0 months, 0 days 4 382 2 WBA, IBF, WBO
2. Joe Louis 11 years, 8 months, 8 days 4 270 1 NYSAC, NBA
3. Muhammad Ali 9 years, 5 months, 5 days 3 443 3 NYSAC, WBA, WBC
4. Lennox Lewis 8 years, 5 months, 13 days 3 086 3 WBA, WBC, IBF
5. Vitali Klitschko 7 years, 5 months, 28 days 2 735 3 WBC, WBO
6. Larry Holmes 7 years, 3 months, 12 days 2 661 1 WBC, IBF
7. Jack Dempsey 7 years, 2 months, 19 days 2 638 1 NYSAC, NBA
8. John L. Sullivan 7 years, 0 months, 9 days 2 566 1 lineal
9. Jack Johnson 6 years, 3 months, 11 days 2 292 1 lineal
10. Evander Holyfield 6 years, 1 month, 1 day 2 223 4 WBA, WBC, IBF
11. James J. Jeffries 5 years, 11 months, 4 days 2 156 1 lineal
12. Tyson Fury 5 years, 1 months, 12 days 1 866 2 WBA, WBC, IBF, WBO
13. Deontay Wilder 5 years, 1 months, 5 days 1 859 1 WBC
14. Anthony Joshua 4 years, 11 months, 10 days 1 806 2 IBF, WBA, WBO
15. Joe Frazier 4 years, 10 months, 18 days 1 785 1 NYSAC, WBA, WBC

All championship reigns of undisputed champions/lineal champions/The Ring champions

edit

The list does not include The Ring and lineal championship fights after July 2, 1921, although it only includes heavyweight champions that captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or The Ring championship.

As of 26 May 2024.

Pos. Name Combined reign Days as champion Number of reigns Title recognition
1. Wladimir Klitschko 12 years, 0 months, 0 days 4 382 2 WBA, IBF, WBO
2. Joe Louis 11 years, 8 months, 8 days 4 270 1 NYSAC, NBA
3. Muhammad Ali 9 years, 5 months, 5 days 3 443 3 NYSAC, WBA, WBC
4. Lennox Lewis 8 years, 5 months, 13 days 3 086 3 WBA, WBC, IBF
5. Vitali Klitschko 7 years, 5 months, 28 days 2 735 3 WBC, WBO
6. Larry Holmes 7 years, 3 months, 12 days 2 661 1 WBC, IBF
7. Jack Dempsey 7 years, 2 months, 19 days 2 638 1 NYSAC, NBA
8. John L. Sullivan 7 years, 0 months, 10 days 2 566 1 lineal
9. Jack Johnson 6 years, 3 months, 11 days 2 292 1 lineal
10. Evander Holyfield 6 years, 1 month, 1 day 2 223 4 WBA, WBC, IBF
11. James J. Jeffries 5 years, 11 months, 4 days 2 156 1 lineal
12. Tyson Fury 5 years, 1 months, 12 days 1 866 2 WBA, WBC, IBF, WBO
13. Joe Frazier 4 years, 10 months, 18 days 1 785 1 NYSAC, WBA, WBC
14. Floyd Patterson 4 years, 10 months, 0 days 1 765 2 NYSAC, NBA
15. James J. Corbett 4 years, 6 months, 10 days 1 652 1 lineal
 
Vitali Klitschko (right) retired as champion in 2005. Following his retirement, the WBC conferred "champion emeritus" status on Klitschko, and assured him he would become the mandatory challenger if and when he decided to return

Championship reigns of undisputed/lineal/The Ring champions with undisputed/lineal/The Ring/unified championships, victories over champions

edit

The list does not include The Ring and lineal championship fights after July 2, 1921, although it only includes heavyweight champions that captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or The Ring championship.

The list only includes title reigns during which the champion:

  • has won undisputed championship (July 2, 1921–present), The Ring championship, lineal championship (August 29, 1885–July 2, 1921)
  • held at least two major world heavyweight titles[25][26][27] simultaneously
  • defeated a fighter that either had to drop his own world title prior to the fight due to organization's championship policy or would later become world heavyweight champion while the winner's reign was still active

As of 26 May 2024.

Pos. Name Combined reign Days as champion Number of reigns Title recognition
1. Wladimir Klitschko 12 years, 0 months, 0 days 4 382 2 WBA, IBF, WBO
2. Joe Louis 11 years, 8 months, 8 days 4 270 1 NYSAC, NBA
3. Muhammad Ali 9 years, 5 months, 5 days 3 443 3 NYSAC, WBA, WBC
4. Larry Holmes 7 years, 3 months, 12 days 2 661 1 WBC, IBF
5. Jack Dempsey 7 years, 2 months, 19 days 2 638 1 NYSAC, NBA
6. John L. Sullivan 7 years, 0 months, 10 days 2 566 1 lineal
7. Lennox Lewis 6 years, 8 months, 3 days 2 437 2 WBA, WBC, IBF
8. Jack Johnson 6 years, 3 months, 11 days 2 292 1 lineal
9. James J. Jeffries 5 years, 11 months, 4 days 2 156 1 lineal
10. Evander Holyfield 5 years, 6 months, 12 days 2 020 3 WBA, WBC, IBF
11. Tyson Fury 5 years, 1 months, 12 days 1 866 2 WBA, WBC, IBF, WBO
12. Joe Frazier 4 years, 10 months, 18 days 1 785 1 NYSAC, WBA, WBC
13. Floyd Patterson 4 years, 10 months, 0 days 1 765 2 NYSAC, NBA
14. James J. Corbett 4 years, 6 months, 10 days 1 652 1 lineal
15. Jess Willard 4 years, 2 months, 29 days 1 551 1 lineal

Individual reigns

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Below is a list of longest reigning heavyweight champions in boxing measured by the individual's longest reign. Both The Ring and lineal championships are included. Career total time as champion (for multiple time champions) does not apply.

All championship reigns

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Pos. Name Title Reign Title recognition
1. Joe Louis 11 years, 8 months, 8 days lineal
2. Wladimir Klitschko 9 years, 7 months and 6 days IBF (+WBA, WBO, The Ring/Lineal)
3. Larry Holmes 7 years, 3 months, 12 days WBC-to-IBF (+The Ring/Lineal)
4. Jack Dempsey 7 years, 2 months, 19 days lineal
5. John L. Sullivan 7 years, 0 months, 9 days lineal
6. Jack Johnson 6 years, 3 months, 10 days lineal
7. Muhammad Ali 5 years, 11 months, 9 days The Ring/Lineal, (+WBA, WBC stripped)
8. James J. Jeffries 5 years, 11 months, 4 days lineal
9. Vitali Klitschko 5 years, 2 months, 4 days WBC
10. Deontay Wilder 5 years, 1 month 5 days WBC
11. Joe Frazier 4 years, 10 months, 18 days NYSAC (+WBA, WBC)
12. James J. Corbett 4 years, 6 months, 10 days lineal
13. Jess Willard 4 years, 2 months, 29 days lineal
14. Tyson Fury 4 years, 2 months, 26 days WBC (+The Ring/Lineal)
15. Lennox Lewis 4 years, 2 months, 15 days WBC (+IBF, WBA stripped, The Ring/Lineal)

Championship reigns with undisputed/lineal/The Ring championships

edit

The list does not include The Ring and lineal championship fights after July 2, 1921, although it only includes title reigns during which the champion captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or The Ring championship.

Pos. Name Title Reign Title recognition
1. Joe Louis 11 years, 8 months, 8 days lineal
2. Wladimir Klitschko 9 years, 7 months and 6 days IBF (+WBA, WBO, The Ring/Lineal)
3. Larry Holmes 7 years, 3 months, 12 days WBC-to-IBF (+The Ring/Lineal)
4. Jack Dempsey 7 years, 2 months, 19 days lineal
5. John L. Sullivan 7 years, 0 months, 9 days lineal
6. Jack Johnson 6 years, 3 months, 10 days lineal
7. Muhammad Ali 5 years, 11 months, 9 days The Ring/Lineal, (+WBA, WBC stripped)
8. James J. Jeffries 5 years, 11 months, 4 days lineal
9. Joe Frazier 4 years, 10 months, 18 days NYSAC (+WBA, WBC)
10. James J. Corbett 4 years, 6 months, 10 days lineal
11. Jess Willard 4 years, 2 months, 29 days lineal
12. Tyson Fury 4 years, 2 months, 26 days WBC (+The Ring/Lineal)
13. Lennox Lewis 4 years, 2 months, 15 days WBC (+IBF, WBA stripped, The Ring/Lineal)
14. Rocky Marciano 3 years, 11 months, 29 days lineal
15. Mike Tyson 3 years, 2 months, 20 days WBC (+WBA, IBF, The Ring)

Title fight finishes

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Fastest stoppages in title fights — 1st round stoppages

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Date Fight Method Round Time Title Source(s)
April 18, 1998
 Herbie Hide def. Damon Reed TKO 1 0:52 WBO [54]
May 21, 2005
 Lamon Brewster def. Andrew Golota TKO 1 0:52 WBO [55]
November 14, 1944
 Joe Louis def. Johnny Davis KO 1 0:53 NYSAC [8][9]
April 6, 1900
 James J. Jeffries def. John Finnegan KO 1 0:55 Lineal [24]
December 10, 1982
 Michael Dokes def. Mike Weaver TKO 1 1:03 WBA [29]
July 4, 1907
 Tommy Burns def. Bill Squires KO 1 1:28 Lineal [15]
March 17, 1908
 Tommy Burns def. Jem Roche KO 1 1:28 Lineal [15]
June 27, 1988
 Mike Tyson def. Michael Spinks KO 1 1:31 WBA, WBC, IBF [14]
July 21, 1989
 Mike Tyson def. Carl Williams TKO 1 1:33 WBA, WBC, IBF [14]
October 4, 1997
 Lennox Lewis def. Andrew Golota KO 1 1:35 WBC [12]
April 22, 1969
 Joe Frazier def. Dave Zyglewicz KO 1 1:36 NYSAC [16]
September 7, 1996
 Mike Tyson def. Bruce Seldon TKO 1 1:49 WBA [14]
September 1, 1973
 George Foreman def. José Roman KO 1 2:00 WBA, WBC [32]
June 22, 1938
 Joe Louis def. Max Schmeling KO 1 2:04 NBA, NYSAC [8]
September 25, 1962
 Sonny Liston def. Floyd Patterson KO 1 2:06 NYSAC, WBA [21]
September 18, 1946
 Joe Louis def. Tami Mauriello KO 1 2:09 NBA, NYSAC [8]
July 22, 1963
 Sonny Liston def. Floyd Patterson KO 1 2:10 WBA, WBC [21]
May 25, 1965
 Muhammad Ali def. Sonny Liston KO 1 2:12 WBC [10]
December 12, 1986
 James Smith def. Tim Witherspoon KO 1 2:12 WBA [56]
May 18, 2019
 Deontay Wilder def. Dominic Breazeale
 KO 1 2:17 WBC [20]
March 28, 1906
 Tommy Burns def. Jim O'Brien KO 1 2:18 Lineal [15]
February 6, 1993
 Riddick Bowe def. Michael Dokes TKO 1 2:19 WBA, IBF [35]
April 17, 1939
 Joe Louis def. Jack Roper KO 1 2:20 NBA, NYSAC [8]
May 15, 1953
 Rocky Marciano def. Jersey Joe Walcott KO 1 2:25 NBA, NYSAC [31]
January 25, 1939
 Joe Louis def. John Henry Lewis KO 1 2:29 NBA, NYSAC [8]
March 28, 1906
 Tommy Burns def. James J. Walker KO 1 2:55 Lineal [15]
January 9, 1942
 Joe Louis def. Buddy Baer KO 1 2:56 NBA, NYSAC [8]
November 4, 2017
 Deontay Wilder def. Bermane Stiverne KO 1 2:59 WBC [20]
March 19, 2011
 Vitali Klitschko def. Odlanier Solís KO 1 2:59 WBC [13]

Fastest stoppages in title fights — undisputed/The Ring/lineal/unified championship on the line

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Date Fight Method Round Time Title Source(s)
November 14, 1944
 Joe Louis def. Johnny Davis KO 1 0:53 NYSAC [8]
April 6, 1900
 James J. Jeffries def. John Finnegan KO 1 0:55 Lineal [24]
July 4, 1907
 Tommy Burns def. Bill Squires KO 1 1:28 Lineal [15]
March 17, 1908
 Tommy Burns def. Jem Roche KO 1 1:28 Lineal [15]
June 27, 1988
 Mike Tyson def. Michael Spinks KO 1 1:31 WBA, WBC, IBF [14]
July 21, 1989
 Mike Tyson def. Carl Williams TKO 1 1:33 WBA, WBC, IBF [14]
September 1, 1973
 George Foreman def. José Roman KO 1 2:00 WBA, WBC [32]
June 22, 1938
 Joe Louis def. Max Schmeling KO 1 2:04 NBA, NYSAC [8]
September 25, 1962
 Sonny Liston def. Floyd Patterson KO 1 2:06 NYSAC, WBA [21]
September 18, 1946
 Joe Louis def. Tami Mauriello KO 1 2:09 NBA, NYSAC [8]
July 22, 1963
 Sonny Liston def. Floyd Patterson KO 1 2:10 WBA, WBC [21]
May 25, 1965
 Muhammad Ali def. Sonny Liston KO 1 2:12 WBC [10]
March 28, 1906
 Tommy Burns def. Jim O'Brien KO 1 2:18 Lineal [15]
February 6, 1993
 Riddick Bowe def. Michael Dokes TKO 1 2:19 WBA, IBF [35]
April 17, 1939
 Joe Louis def. Jack Roper KO 1 2:20 NBA, NYSAC [8]
May 15, 1953
 Rocky Marciano def. Jersey Joe Walcott KO 1 2:25 NBA, NYSAC [31]
January 25, 1939
 Joe Louis def. John Henry Lewis KO 1 2:29 NBA, NYSAC [8]
March 28, 1906
 Tommy Burns def. James J. Walker KO 1 2:55 Lineal [15]
January 9, 1942
 Joe Louis def. Buddy Baer KO 1 2:56 NBA, NYSAC [8]
March 29, 1940
 Joe Louis def. Johnny Paychek TKO 2 0:15 NBA, NYSAC [8]
May 22, 1993
 Riddick Bowe def. Jesse Ferguson KO 2 0:17 WBA [35]
August 26, 1904
 James J. Jeffries def. Jack Munroe TKO 2 0:45 Lineal [24]
November 18, 1970
 Joe Frazier def. Bob Foster KO 2 0:49 WBA, WBC [16]
September 14, 1923
 Jack Dempsey def. Luis Ángel Firpo KO 2 0:57 NBA, NYSAC [23]
February 17, 1941
 Joe Louis def. Gus Dorazio KO 2 1:30 NBA, NYSAC [8]
March 26, 1974
 George Foreman def. Ken Norton TKO 2 2:00 WBA, WBC [32]
January 22, 1973
 George Foreman def. Joe Frazier TKO 2 2:26 WBA, WBC [32]
July 15, 2000
 Lennox Lewis def. Francois Botha TKO 2 2:39 WBC, IBF [12]
April 29, 2000
 Lennox Lewis def. Michael Grant KO 2 2:53 WBC, IBF [12]
March 21, 1988
 Mike Tyson def. Tony Tubbs TKO 2 2:54 WBA, WBC, IBF [14]

Most opponents beaten in title fights by stoppage

edit

Keys:

  Active title reign
  Reign has ended
Note: The names in italics are champions that did not win undisputed championship (July 2, 1921–present), The Ring championship or lineal championship (August 29, 1885–July 2, 1921)
Name Finished opponents Fights
1. Joe Louis 20 [8][9]
2. Wladimir Klitschko 18 [7]
3. Larry Holmes 14 [11]
4. Muhammad Ali 13 [10]
5. Vitali Klitschko 12 [13]
6. Lennox Lewis 11 [12]
7. Mike Tyson 9 [14]
Tommy Burns [15]
9. Deontay Wilder 8 [20]
9. Joe Frazier 8 [16]
11. Floyd Patterson 7 [21]
11. Anthony Joshua 7 [18]
13. Rocky Marciano 5 [31]
James J. Jeffries [24]
Ezzard Charles [19]
Jack Dempsey [23]

Most title fight wins by stoppage

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Keys:

  Active title reign
  Reign has ended
Note: The names in italics are champions that did not win undisputed championship (July 2, 1921–present), The Ring championship or lineal championship (August 29, 1885–July 2, 1921)
Name Title fight finishes Fights
1. Joe Louis 23 [8][9]
2. Wladimir Klitschko 19 [7]
3. Muhammad Ali 14 [10]
3. Larry Holmes 14 [23]
5. Vitali Klitschko 12 [13]
6. Lennox Lewis 11 [12]
6. Tommy Burns 11 [15]
8. Mike Tyson 10 [14]
9. Deontay Wilder 9 [20]
10. Joe Frazier 8 [16]
10. Floyd Patterson 8 [21]
11. Anthony Joshua 7 [18]
12. Rocky Marciano 6 [31]
12. James J. Jeffries 6 [24]
12. Ezzard Charles 6 [19]

Highest knockout-to-beat-opponent percentage in title fights

edit

Keys:

  Active title reign
  Reign has ended
Note 1: The names in italics are champions that did not win undisputed championship (July 2, 1921–present), The Ring championship or lineal championship (August 29, 1885–July 2, 1921)
Note 2: Only fighters who have defeated 5 or more opponents for the world heavyweight title are included
Name Opponents fought Opponents stopped Percentage Fights
1. Rocky Marciano 5 5 100% [31]
2. Deontay Wilder 9 8 88.89% [20]
3. Joe Louis 23 20 86.96% [8][9]
4. Tommy Burns 12 9 75% [15]
5. Joe Frazier 11 8 72.73% [16]
6. Jack Dempsey 7 5 71.43% [23]
6. James J. Jeffries 7 5 71.43% [24]
8. Vitali Klitschko 17 12 70.59% [13]
9. Floyd Patterson 10 7 70% [21]
9. Anthony Joshua 10 7 70% [18]
11. Wladimir Klitschko 26 18 69.23% [7]
12. Lennox Lewis 17 11 64.71% [12]
13. Mike Tyson 14 9 64.29% [14]
14. Muhammad Ali 22 13 59.09% [10]
15. Larry Holmes 24 14 58.33% [23]

Highest knockout-to-win percentage in title fights

edit

Keys:

  Active title reign
  Reign has ended
Note 1: The names in italics are champions that did not win undisputed championship (July 2, 1921–present), The Ring championship or lineal championship (August 29, 1885–July 2, 1921)
Note 2: Only fighters who have won 5 or more world heavyweight title fights are included
Name Title fights Title fight stoppages Percentage Fights
1. Rocky Marciano 7 6 85.71% [31]
2. Joe Louis 28 23 82.14% [8][9]
3. Tommy Burns 15 11 73.33% [15]
4. Vitali Klitschko 17 12 70.59% [13]
5. Deontay Wilder 13 9 69.23% [20]
6. Joe Frazier 12 8 66.67% [16]
6. James J. Jeffries 9 6 66.67% [24]
8. Wladimir Klitschko 29 19 65.52% [7]
9. Lennox Lewis 17 11 64.71% [12]
10. Mike Tyson 16 10 62.5% [14]
11. Jack Dempsey 8 5 62.5% [23]
12. Floyd Patterson 13 8 61.54% [21]
13. Anthony Joshua 12 7 58.33% [18]
14. Jack Johnson 7 4 57.14% [22]
14. George Foreman 7 4 57.14% [32]

Champions by age

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Keys:

  Active title reign
  Reign has ended
  • Note: Secondary championships are not included.

Oldest champions

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As of November 25, 2024.

This is the list of the oldest heavyweight champions ordered by age at their last day as champion.

All championship reigns

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Name Recognition Last day as champion Age Source(s)
1 George Foreman Lineal November 22, 1997 48 years, 316 days [57]
2 Vitali Klitschko WBC December 16, 2013 42 years, 2 months, 26 days [58]
3 Wladimir Klitschko WBA, IBF, WBO November 28, 2015 39 years, 8 months, 3 days [7]
4 Oleg Maskaev WBC March 8, 2008 39 years, 6 days [59]
5 Jersey Joe Walcott NBA, NYSAC September 23, 1952 38 years, 7 months, 23 days [48]
6 Lennox Lewis WBC February 6, 2004 38 years, 5 months, 4 days [60]
7 Evander Holyfield WBA March 3, 2001 38 years, 4 months, 12 days [17]
8 Corrie Sanders WBO February 1, 2004 38 years, 25 days [61]
9 Muhammad Ali WBA October 18, 1979 37 years, 9 months, 1 day
10 Jess Willard Lineal July 4, 1919 37 years, 6 months, 5 days

Championship reigns with undisputed/lineal/The Ring championships

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The list does not include The Ring and lineal championship fights after July 2, 1921, although it only includes title reigns during which the champion captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or The Ring championship.

Name Recognition Last day as champion Age Source(s)
1 Wladimir Klitschko WBA, IBF, WBO November 28, 2015 39 years, 8 months, 3 days [7]
2 Jersey Joe Walcott NBA, NYSAC September 23, 1952 38 years, 7 months, 23 days [48]
3 Lennox Lewis WBC February 6, 2004 38 years, 5 months, 4 days [60]
4 Muhammad Ali WBA October 18, 1979 37 years, 9 months, 1 day
5 Jess Willard Lineal July 4, 1919 37 years, 6 months, 5 days [38]
6 Oleksandr Usyk WBA, WBC, IBF, WBO Present 37 years, 10 months and 8 days [36]
7 Jack Johnson Lineal April 5, 1915 37 years, 0 months, 5 days [22]
8 Bob Fitzsimmons Lineal July 4, 1919 36 years, 0 months, 14 days [44]
9 Larry Holmes IBF September 21, 1985 35 years, 10 months, 18 days [11]
10 Tyson Fury WBC May 18, 2024 35 years, 9 months, 7 days [33]

Youngest champions

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As of November 25, 2024.

All championship reigns

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Name Recognition Date Age Source(s)
1 Mike Tyson WBC November 22, 1986 20 years, 4 months, 23 days [14]
2 Floyd Patterson NBA, NYSAC November 30, 1956 21 years, 10 months, 26 days [21]
3 Muhammad Ali WBA, WBC February 25, 1964 22 years, 1 month, 8 days [10]
4 Joe Louis NBA, NYSAC June 22, 1937 23 years, 1 month, 9 days [8]
5 Jack Dempsey Lineal July 4, 1919 24 years, 0 months, 10 days [23]
6 George Foreman WBA, WBC February 22, 1973 24 years, 0 months, 12 days [32]
7 Joe Frazier NYSAC March 4, 1968 24 years, 1 month, 21 days [16]
8 James J. Jeffries Lineal June 9, 1899 24 years, 1 month, 25 days [24]
9 Michael Dokes WBA December 10, 1982 24 years, 4 months [62]
10 Wladimir Klitschko WBO October 14, 2000 24 years, 6 months, 19 days [7]

Championship reigns with undisputed/lineal/The Ring championships

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The list does not include The Ring and lineal championship fights after July 2, 1921, although it only includes title reigns during which the champion captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or The Ring championship.

Name Recognition Date Age Source(s)
1 Mike Tyson WBC November 22, 1986 20 years, 4 months, 23 days [14]
2 Floyd Patterson NBA, NYSAC November 30, 1956 21 years, 10 months, 26 days [21]
3 Muhammad Ali WBA, WBC February 25, 1964 22 years, 8 days [10]
4 Joe Louis NBA, NYSAC June 22, 1937 23 years, 1 month, 9 days [8]
5 Jack Dempsey Lineal July 4, 1919 24 years, 0 months, 10 days [23]
6 George Foreman WBA, WBC February 22, 1973 24 years, 0 months, 12 days [32]
7 Joe Frazier NYSAC March 4, 1968 24 years, 1 month, 21 days [16]
8 James J. Jeffries Lineal June 9, 1899 24 years, 1 month, 25 days [24]
9 Leon Spinks WBA February 15, 1978 24 years, 7 months, 4 days [51]
10 Tommy Burns Lineal January 16, 1902 24 years, 8 months, 6 days [15]

Fastest world championship wins

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By time elapsed from professional debut

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Ranked by the time elapsed between professional debut and world heavyweight title win.

All championship reigns

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Name Professional debut World title win Time elapsed Fights
1 Leon Spinks January 15, 1977 February 15, 1978 1 year, 1 month [51]
2 Mike Tyson March 6, 1985 November 22, 1986 1 year, 8 months, 16 days [14]
3 John Tate May 7, 1977 October 20, 1979 2 years, 5 months, 13 days [63]
4 Anthony Joshua October 5, 2013 April 9, 2016 2 years, 6 months, 4 days [18]
5 Joe Frazier August 16, 1965 March 4, 1968 2 years, 6 months, 17 days [43]
6 Vitali Klitschko November 16, 1996 June 26, 1999 2 years, 7 months, 10 days [13]
7 Joe Louis July 7, 1934 June 22, 1937 2 years, 11 months, 15 days [32]
8 Charles Martin October 27, 2012 January 16, 2016 3 years, 2 months, 20 days [64]
9 Muhammad Ali October 29, 1960 January 25, 1964 3 years, 2 months, 27 days [10]
10 George Foreman June 23, 1969 January 22, 1973 3 years, 6 months, 30 days [32]

Championship reigns with undisputed/lineal/The Ring championships

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The list does not include The Ring and lineal championship fights after July 2, 1921, although it only includes title reigns during which the champion captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or The Ring championship.

Name Professional debut World title win Time elapsed Fights
1 Leon Spinks January 15, 1977 February 15, 1978 1 year, 1 month [51]
2 Mike Tyson March 6, 1985 November 22, 1986 1 year, 8 months, 16 days [14]
3 Joe Frazier August 16, 1965 March 4, 1968 2 years, 6 months, 17 days [16]
4 Joe Louis July 7, 1934 June 22, 1937 2 years, 11 months, 15 days [8]
5 Muhammad Ali October 29, 1960 January 25, 1964 3 years, 2 months, 27 days [10]
6 George Foreman June 23, 1969 January 22, 1973 3 years, 6 months, 30 days [32]
7 James J. Jeffries October 29, 1895 June 9, 1899 3 years, 7 months, 11 days [24]
8 Riddick Bowe March 6, 1989 November 13, 1992 3 years, 6 months, 30 days [35]
9 Tommy Burns January 16, 1902 February 23, 1906 4 years, 1 month, 7 days [15]
10 Jess Willard February 5, 1911 April 5, 1915 4 years, 2 months [38]

By number of bouts fought to win world championship

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Ranked by the number of bouts boxer fought at the professional level before winning world heavyweight title.

All championship reigns

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Name Professional debut World title win Fights Source(s)
1 Leon Spinks January 15, 1977 February 15, 1978 8 [51]
2 James J. Corbett March 6, 1885 November 22, 1886 11 [37]
3 James J. Jeffries October 29, 1895 June 9, 1899 13 [24]
4 Anthony Joshua October 5, 2013 April 9, 2016 16 [18]
5 Tim Witherspoon October 10, 1979 March 9, 1984 19 [30]
5 Oleksandr Usyk September 11, 2013 September 25, 2021 19 [36]
7 John Tate May 7, 1977 October 20, 1979 20 [63]
7 Joe Frazier August 16, 1965 March 4, 1968 20 [16]
7 Muhammad Ali October 29, 1960 January 25, 1964 20 [10]
10 Tony Tubbs June 14, 1980 April 29, 1985 21 [65]

Championship reigns with undisputed/lineal/The Ring championships

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The list does not include The Ring and lineal championship fights after July 2, 1921, although it only includes title reigns during which the champion captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or The Ring championship.

Name Professional debut World title win Fights Source(s)
1 Leon Spinks January 15, 1977 February 15, 1978 8 [51]
2 James J. Corbett March 6, 1885 November 22, 1886 11 [37]
3 James J. Jeffries October 29, 1895 June 9, 1899 13 [24]
4 Joe Frazier August 16, 1965 March 4, 1968 20 [16]
4 Muhammad Ali October 29, 1960 January 25, 1964 20 [10]
6 Ingemar Johansson December 5, 1952 June 26, 1959 22 [49]
7 Evander Holyfield November 15, 1984 October 25, 1990 25 [17]
7 Tyson Fury December 6, 2008 November 28, 2015 25 [33]
9 Mike Tyson March 6, 1985 November 22, 1986 28 [14]
9 Larry Holmes March 21, 1973 June 9, 1978 28 [11]
9 Michael Spinks April 16, 1977 September 21, 1985 28 [42]
9 Jess Willard February 5, 1911 April 5, 1915 28 [38]

Statistics by non-US country

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The list includes world heavyweight boxing champions from outside of the United States. It includes only major titles, without The Ring and lineal championships (after July 2, 1921).

  • Note: Secondary championships are not included.

Title fight wins & beaten opponents

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All championship reigns

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Country No. of champions Boxers by Name Title wins Beaten opponents Fights
Ukraine 3 Vitali Klitschko, Wladimir Klitschko, Oleksandr Usyk 44 40 [13][7][36]
United Kingdom 6 Bob Fitzsimmons, Lennox Lewis*, Frank Bruno, Herbie Hide, David Haye, Tyson Fury, Anthony Joshua 37 33 [44][12][66][54][67][33][18]
Canada 4 Tommy Burns, Trevor Berbick*, Bermane Stiverne, Lennox Lewis* 30 28 [15][68][69][12]
Russia 3 Nikolai Valuev, Oleg Maskaev, Sultan Ibragimov 9 7 [70][59][71]
Italy 1 Primo Carnera 3 3 [34]
Uzbekistan 1 Ruslan Chagaev 3 3 [72]
New Zealand 1 Joseph Parker 3 3 [73]
South Africa 2 Gerrie Coetzee, Corrie Sanders 2 2 [74][75]
Germany 1 Max Schmeling 2 2 [39]
Sweden 1 Ingemar Johansson 1 1 [49]
Belarus 1 Siarhei Liakhovich 1 1 [76]
Nigeria 1 Samuel Peter 1 1 [77]
Jamaica 1 Trevor Berbick* 1 1 [68]

All championship reigns of undisputed champions/lineal champions/The Ring champions

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The list does not include The Ring and lineal championship fights after July 2, 1921, although it only includes heavyweight champions that captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or The Ring championship.

Country No. of champions Boxers by Name Title wins Beaten opponents Fights
Ukraine 3 Vitali Klitschko, Wladimir Klitschko, Oleksandr Usyk 44 40 [13][7][36]
Canada 2 Tommy Burns, Lennox Lewis* 28 26 [15][12]
United Kingdom 3 Bob Fitzsimmons, Lennox Lewis*, Tyson Fury 21 20 [44][12][33]
Italy 1 Primo Carnera 3 3 [34]
Germany 1 Max Schmeling 2 2 [39]
Sweden 1 Ingemar Johansson 1 1 [49]

Championship reigns of undisputed/lineal/The Ring champions with undisputed/lineal/The Ring/unified championships, victories over champions

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The list only includes title reigns during which the champion:

  • has won undisputed championship (July 2, 1921–present), The Ring championship, lineal championship (August 29, 1885–July 2, 1921)
  • held at least two major world heavyweight titles[25][26][27] simultaneously
  • defeated a fighter that either had to drop his own world title prior to the fight due to organization's championship policy or would become world heavyweight champion while the winner's reign was still active
Country No. of champions Boxers by Name Title wins Beaten opponents Fights
Ukraine 3 Vitali Klitschko, Wladimir Klitschko, Oleksandr Usyk 31 28 [13][7][36]
Canada 2 Tommy Burns, Lennox Lewis* 25 23 [15][12][17]
United Kingdom 3 Bob Fitzsimmons, Lennox Lewis*, Tyson Fury 17 16 [44][12][17][33]
Italy 1 Primo Carnera 3 3 [34]
Germany 1 Max Schmeling 2 2 [39]
Sweden 1 Ingemar Johansson 1 1 [49]

Title streaks

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Only major titles, without The Ring and lineal championships (after July 2, 1921), are included.

All championship reigns

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For the purpose of this list, successful title defenses that ended in a draw are also included.

Country Champion Title defenses Beaten opponents Fights
Ukraine Wladimir Klitschko 18 17 [7]
Canada Tommy Burns 13 11 [15]
United Kingdom Lennox Lewis 9 8 [12]
Russia Nikolai Valuev 6 5 [70]
Italy Primo Carnera 2 2 [34]
Uzbekistan Ruslan Chagaev 2 2 [72]
New Zealand Joseph Parker 2 2 [73]
Germany Max Schmeling 1 1 [39]

Championship reigns with undisputed/lineal/The Ring championships

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The list does not include The Ring and lineal championship fights after July 2, 1921, although it only includes title reigns during which the champion captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or The Ring championship. For the purpose of this list, successful title defenses that ended in a draw are also included.

Country Champion Title defenses Beaten opponents Fights
Ukraine Wladimir Klitschko 18 17 [7]
Canada Tommy Burns 13 11 [15]
United Kingdom Lennox Lewis 9 8 [12]
Italy Primo Carnera 2 2 [34]
Germany Max Schmeling 1 1 [39]

See also

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Notes

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  1. ^ Several IBHOF inductees’ professional boxing records printed in the organization's official record books indicate that IBHOF did not recognize WBO as a major organization until at least August 23, 1997:
    • IBHOF official record book, 1997 edition
      • Sugar Ray Leonard's opponent Thomas Hearns, who was defending the WBO super middleweight title against him on 12 June 1989, is not marked as World Champion
    • IBHOF official record book, 1999 edition
      • Sugar Ray Leonard's opponent Thomas Hearns, who was defending the WBO super middleweight title against him on 12 June 1989, is not marked as World Champion
    • IBHOF official record book, 2002 edition
      • Sugar Ray Leonard's opponent Thomas Hearns, who was defending the WBO super middleweight title against him on 12 June 1989, is not marked as World Champion
    • IBHOF official record book, 2006 edition
      • Sugar Ray Leonard's opponent Thomas Hearns, who was defending the WBO super middleweight title against him on 12 June 1989, is not marked as World Champion
      • Michael Carbajal's opponent Josue Camacho, who was defending the WBO junior flyweight title against him on 15 July 1994, is not marked as World Champion
      • Michael Carbajal’s opponent Jorge Arce, who was defending the WBO junior flyweight title against him on 31 July 1999, is marked as World Champion
    • IBHOF official record book, 2011 edition
      • Sugar Ray Leonard's opponent Thomas Hearns, who was defending the WBO super middleweight title against him on 12 June 1989, is not marked as World Champion
      • Michael Carbajal's opponent Josue Camacho, who was defending the WBO junior flyweight title against him on 15 July 1994, is not marked as World Champion
      • Ricardo Lopez's opponent Alex Sanchez, who was defending the WBO minimumweight title against him on 23 August 1997, is marked as World Champion
      • Michael Carbajal’s opponent Jorge Arce, who was defending the WBO junior flyweight title against him on 31 July 1999, is marked as World Champion

References

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  1. ^ "The Boxing Register: International Boxing Hall Of Fame Official Record Book, 1997 edition" (pdf). International Boxing Hall Of Fame. Retrieved October 28, 2022.
  2. ^ "The Boxing Register: International Boxing Hall Of Fame Official Record Book, 1999 edition" (pdf). International Boxing Hall Of Fame. Retrieved October 28, 2022.
  3. ^ "The Boxing Register: International Boxing Hall Of Fame Official Record Book, 2002 edition" (pdf). International Boxing Hall Of Fame. Retrieved October 28, 2022.
  4. ^ "The Boxing Register: International Boxing Hall Of Fame Official Record Book, 2006 edition" (pdf). International Boxing Hall Of Fame. Retrieved October 28, 2022.
  5. ^ "The Boxing Register: International Boxing Hall Of Fame Official Record Book, 2011 edition" (pdf). International Boxing Hall Of Fame. Retrieved May 26, 2019.
  6. ^ "The Ring updates championship policy". Ring TV. May 3, 2012.
  7. ^ a b c d e f g h i j k l m n o p q r s t u v "Professional boxing record: Wladimir Klitschko". Retrieved March 20, 2020.
  8. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae "Professional boxing record: Joe Louis". Retrieved March 14, 2020.
  9. ^ a b c d e f g h i j k l m n o "Joe Louis, p. 575" (pdf). The Boxing Register: International Boxing Hall Of Fame Official Record Book. International Boxing Hall Of Fame. Retrieved May 26, 2019. Johnny Davis, Ret-World-H
  10. ^ a b c d e f g h i j k l m n o p q r s t u "Professional boxing record: Muhammad Ali". Retrieved March 14, 2020.
  11. ^ a b c d e f g h i j k l m "Professional boxing record: Larry Holmes". Retrieved March 15, 2020.
  12. ^ a b c d e f g h i j k l m n o p q r s t u v w x "Professional boxing record: Lennox Lewis". Retrieved March 19, 2020.
  13. ^ a b c d e f g h i j k l m n o p q "Professional boxing record: Vitali Klitschko". Retrieved March 19, 2020.
  14. ^ a b c d e f g h i j k l m n o p q r s t u v w x y "Professional boxing record: Mike Tyson". Retrieved March 18, 2020.
  15. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac "Professional boxing record: Tommy Burns". Retrieved March 14, 2020.
  16. ^ a b c d e f g h i j k l m n o p q r s t u v "Professional boxing record: Joe Frazier". Retrieved March 14, 2020.
  17. ^ a b c d e f g h i j k l "Professional boxing record: Evander Holyfield". Retrieved March 19, 2020.
  18. ^ a b c d e f g h i j k "Professional boxing record: Anthony Joshua". Retrieved March 20, 2020.
  19. ^ a b c d e f g h i j k l "Professional boxing record: Ezzard Charles". Retrieved March 14, 2020.
  20. ^ a b c d e f g h i j "Professional boxing record: Deontay Wilder". Retrieved March 21, 2020.
  21. ^ a b c d e f g h i j k l m n o p "Professional boxing record: Floyd Patterson". Retrieved March 14, 2020.
  22. ^ a b c d e f g h i j k "Professional boxing record: Jack Johnson". Retrieved March 14, 2020.
  23. ^ a b c d e f g h i j k l m n o p "Professional boxing record: Jack Dempsey". Retrieved March 14, 2020.
  24. ^ a b c d e f g h i j k l m n o p q r s t u v "Professional boxing record: James J. Jeffries". Retrieved March 14, 2020.
  25. ^ a b c d Rules governing championship contests Archived February 5, 2018, at the Wayback Machine, International Boxing Federation
  26. ^ a b c d Regulation of world championship contests, World Boxing Organization
  27. ^ a b c d Rules and regulations, World Boxing Association
  28. ^ a b "Professional boxing record: Chris Byrd". Retrieved March 19, 2020.
  29. ^ a b c "Professional boxing record: Mike Weaver". Retrieved March 15, 2020.
  30. ^ a b c "Professional boxing record: Tim Witherspoon". Retrieved March 15, 2020.
  31. ^ a b c d e f g h i j k l m "Professional boxing record: Rocky Marciano". Retrieved March 14, 2020.
  32. ^ a b c d e f g h i j k l "Professional boxing record: George Foreman". Retrieved March 14, 2020.
  33. ^ a b c d e f g "Professional boxing record: Tyson Fury". Retrieved March 20, 2020.
  34. ^ a b c d e f g "Professional boxing record: Primo Carnera". Retrieved March 14, 2020.
  35. ^ a b c d e f "Professional boxing record: Riddick Bowe". Retrieved March 19, 2020.
  36. ^ a b c d e f g "Professional boxing record: Oleksandr Usyk". Retrieved September 17, 2022.
  37. ^ a b c d "Professional boxing record: James J. Corbett". Retrieved March 14, 2020.
  38. ^ a b c d e "Professional boxing record: Jess Willard". Retrieved March 14, 2020.
  39. ^ a b c d e f g "Professional boxing record: Max Schmeling". Retrieved March 14, 2020.
  40. ^ a b Villadsen, Rene (April 5, 2015). History of the Heavyweight Championship of the World. ISBN 9788798939078. Retrieved May 15, 2020.
  41. ^ a b "Professional boxing record: Gene Tunney". Retrieved March 14, 2020.
  42. ^ a b c "Professional boxing record: Michael Spinks". Retrieved March 18, 2020.
  43. ^ a b c "Professional boxing record: John L. Sullivan". Retrieved March 14, 2020.
  44. ^ a b c d e f "Professional boxing record: Bob Fitzsimmons". Retrieved March 14, 2020.
  45. ^ a b "Professional boxing record: Marvin Hart". Retrieved March 14, 2020.
  46. ^ a b "Professional boxing record: Max Baer". Retrieved March 14, 2020.
  47. ^ a b "Professional boxing record: Jim Braddock". Retrieved March 14, 2020.
  48. ^ a b c d "Professional boxing record: Jersey Joe Walcott". Retrieved March 14, 2020.
  49. ^ a b c d e f "Professional boxing record: Ingemar Johansson". Retrieved March 14, 2020.
  50. ^ a b "Professional boxing record: Sonny Liston". Retrieved March 14, 2020.
  51. ^ a b c d e f g "Professional boxing record: Leon Spinks". Retrieved March 14, 2020.
  52. ^ a b "Professional boxing record: James Douglas". Retrieved March 19, 2020.
  53. ^ Fischer, Doug (May 1, 2020). "Dougie's Friday mailbag (rating Wladimir Klitschko, Calzaghe vs. Conn, Parker vs. Fa)". The Ring. Retrieved May 3, 2020.
  54. ^ a b "Professional boxing record: Herbie Hide". Retrieved March 19, 2020.
  55. ^ "Professional boxing record: Lamon Brewster". Retrieved March 21, 2020.
  56. ^ "Professional boxing record: James Smith". Retrieved March 18, 2020.
  57. ^ "Foreman Relinquishes IBF Title". Retrieved March 30, 2020.
  58. ^ "Vitali Klitschko vacates title". Retrieved March 30, 2020.
  59. ^ a b "Professional boxing record: Oleg Maskaev". Retrieved March 21, 2020.
  60. ^ a b "Lewis bows out as champion". Retrieved March 30, 2020.
  61. ^ "WBO world heavyweight championship". Retrieved March 14, 2020.
  62. ^ "Professional boxing record: Michael Dokes". Retrieved March 15, 2020.
  63. ^ a b "Professional boxing record: John Tate". Retrieved March 15, 2020.
  64. ^ "Professional boxing record: Charles Martin". Retrieved March 20, 2020.
  65. ^ "Professional boxing record: Tony Tubbs". Retrieved March 15, 2020.
  66. ^ "Professional boxing record: Frank Bruno". Retrieved March 19, 2020.
  67. ^ "Professional boxing record: David Haye". Retrieved March 21, 2020.
  68. ^ a b "Professional boxing record: Trevor Berbick". Retrieved March 18, 2020.
  69. ^ "Professional boxing record: Bermane Stiverne". Retrieved March 21, 2020.
  70. ^ a b "Professional boxing record: Nikolai Valuev". Retrieved March 21, 2020.
  71. ^ "Professional boxing record: Sultan Ibragimov". Retrieved March 21, 2020.
  72. ^ a b "Professional boxing record: Ruslan Chagaev". Retrieved March 20, 2020.
  73. ^ a b "Professional boxing record: Joseph Parker". Retrieved March 20, 2020.
  74. ^ "Professional boxing record: Gerrie Coetzee". Retrieved March 15, 2020.
  75. ^ "Professional boxing record: Corrie Sanders". Retrieved March 20, 2020.
  76. ^ "Professional boxing record: Siarhei Liakhovich". Retrieved March 21, 2020.
  77. ^ "Professional boxing record: Samuel Peter". Retrieved March 21, 2020.
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