User:Jntg4Games/Major Leagues

Current

American Professional Football Association (1920-1921) (=National Football League)
All-America Football Conference (1946-1949) (Merged with National Football League)
American Football League (1960-1969) (Merged with National Football League)
World Football League (1974-1975) (Folded)
United States Football League (1983-1985) (Folded)
XFL (2001) (Folded)

National Association (1871-1875) (Folded)
National League (1876-1902) (Merged with American League as Major League Baseball)
American Association (1882-1891) (Merged with National League)
Union Association (1884) (Folded)
Players' National League (1890) (Folded)
American League (1901-1902) (Merged with National League as Major League Baseball)
Major League Baseball (1903) (Dissolved into American League and National League)
American League (1904) (Merged with National League as Major League Baseball)
National League (1904) (Merged with American League as Major League Baseball)
Federal League (1914-1915) (Folded)

National Basketball League (1937-1949) (Merged with Basketball Association of America as National Basketball Association)
Basketball Association of America (1946-1949) (Merged with National Basketball League as National Basketball Association)
American Basketball Association (1967-1976) (Merged with National Basketball Association)

National Hockey Association (1910-1917) (Folded)
Pacific Coast Hockey Association (1911-1924) (Folded)
Western Canada Hockey League (1921-1925) (=Western Hockey League)
Western Hockey League (1925-1926) (Folded)
World Hockey Association (1972-1979) (Merged with National Hockey League)