2018 Oracle Challenger Series – Chicago – Men's singles

This was the first edition of the tournament.

Chicago – Men's singles
2018 Oracle Challenger Series – Chicago
Final
ChampionUzbekistan Denis Istomin
Runner-upUnited States Reilly Opelka
Score6–4, 6–2
Events
Singles men women
Doubles men women
Oracle Challenger Series – Chicago · 2019 →

Denis Istomin won the title after defeating Reilly Opelka 6–4, 6–2 in the final.

Seeds

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  1.   Andreas Seppi (first round)
  2.   Denis Istomin (champion)
  3.   Vasek Pospisil (first round)
  4.   Viktor Troicki (first round)
  5.   Michael Mmoh (second round)
  6.   Ruben Bemelmans (quarterfinals)
  7.   Elias Ymer (first round)
  8.   Noah Rubin (quarterfinals)

Draw

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Finals

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Semifinals Final
          
Alt   Dominik Köpfer 3 63
  Reilly Opelka 6 77
  Reilly Opelka 4 2
2   Denis Istomin 6 6
  Bjorn Fratangelo 1 2
2   Denis Istomin 6 6

Top half

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First round Second round Quarterfinals Semifinals
1/WC   A Seppi 3 65
Q   A Sarkissian 6 77 Q   A Sarkissian 6 64 63
  DE Galán 65 3   JC Aragone 2 77 77
  JC Aragone 77 6   JC Aragone 4 2
Alt   D Köpfer 6 6 Alt   D Köpfer 6 6
Q   V Millot 3 4 Alt   D Köpfer 4 77 6
  M Krueger 3 6 6   M Krueger 6 64 2
7   E Ymer 6 3 2 Alt   D Köpfer 3 63
3   V Pospisil 2 2   R Opelka 6 77
Alt   D Young 6 6 Alt   D Young 6 6
  J-P Smith 2 6 6   J-P Smith 3 4
Alt   R Cid Subervi 6 1 4 Alt   D Young 6 2 65
  R Quiroz 3 2   R Opelka 3 6 77
  R Opelka 6 6   R Opelka 6 6
  C Eubanks 7 4 4 5   M Mmoh 4 4
5   M Mmoh 5 6 6

Bottom half

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First round Second round Quarterfinals Semifinals
8   N Rubin 6 3 6
  E King 4 6 3 8   N Rubin 5 6 7
  A Popyrin 6 7   A Popyrin 7 2 5
  V Estrella Burgos 3 5 8   N Rubin 1 4
Alt   E Escobedo 63 6 1   B Fratangelo 6 6
Q   S Bangoura 77 4 6 Q   S Bangoura 4 6 5
  B Fratangelo 2 6 6   B Fratangelo 6 1 7
4   V Troicki 6 2 0   B Fratangelo 1 2
6   R Bemelmans 7 78 2   D Istomin 6 6
Q   H Nys 5 66 6   R Bemelmans 6 6
LL   K Uchida 6 6 LL   K Uchida 3 4
WC   T-S Kwiatkowski 1 3 6   R Bemelmans 3 4
WC   T Paul 6 6 2   D Istomin 6 6
LL   R Roelofse 3 2 WC   T Paul 5 3
  M Arévalo 4 1 2   D Istomin 7 6
2   D Istomin 6 6
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