Champaign CH 2004
Justin Gimelstob won the title, beating Ramon Delgado 6–4 6–4 in the final.
Main draw 32 players
- 1🇷🇸Janko TipsarevicQuarterfinals · Lost to Amer Delic
- 2🇺🇸Paul GoldsteinRound of 16 · Lost to Rajeev Ram
- 3🇺🇸Brian BakerRound of 16 · Lost to Ramon Delgado
- 4🇨🇦Frank DancevicSemifinals · Lost to Justin Gimelstob
- 5🇵🇰Aisam Ul Haq QureshiRound of 32 · Lost to Frederic Niemeyer
- 6🇧🇦Amer DelicSemifinals · Lost to Ramon Delgado
- 7🇹🇭Danai UdomchokeRound of 32 · Lost to Marcus Sarstrand
- 8🇵🇭Cecil MamiitQuarterfinals · Lost to Frank Dancevic
- 🇺🇸Justin GimelstobFinal · Champion
- Q🇵🇾Ramon DelgadoFinal · Lost to Justin Gimelstob
- 🇸🇪Marcus SarstrandQuarterfinals · Lost to Ramon Delgado
- 🇺🇸Rajeev RamQuarterfinals · Lost to Justin Gimelstob
- 🇺🇸Bobby ReynoldsRound of 16 · Lost to Janko Tipsarevic
- 🇺🇸Brian VahalyRound of 16 · Lost to Marcus Sarstrand
- WC🇺🇸Brian WilsonRound of 16 · Lost to Cecil Mamiit
- 🇵🇭Eric TainoRound of 16 · Lost to Frank Dancevic
- 🇨🇦Frederic NiemeyerRound of 16 · Lost to Justin Gimelstob
- 🇺🇸Todd WidomRound of 16 · Lost to Amer Delic
- 🇷🇸Dusan VemicRound of 32 · Lost to Frank Dancevic
- 🇸🇪Filip PrpicRound of 32 · Lost to Brian Vahaly
- 🇷🇴Florin MergeaRound of 32 · Lost to Paul Goldstein
- Q🇵🇾Francisco RodriguezRound of 32 · Lost to Todd Widom
- 🇺🇸Jesse WittenRound of 32 · Lost to Ramon Delgado
- Q🇸🇪Johan BrunstromRound of 32 · Lost to Amer Delic
- LL🇻🇪Jose De ArmasRound of 32 · Lost to Brian Baker
- 🇺🇸Matias BoekerRound of 32 · Lost to Rajeev Ram
- Q🇺🇸Michael CalkinsRound of 32 · Lost to Eric Taino
- WC🇺🇸Ryler DeheartRound of 32 · Lost to Justin Gimelstob
- 🇺🇸Scott LipskyRound of 32 · Lost to Cecil Mamiit
- 🇧🇬Todor EnevRound of 32 · Lost to Bobby Reynolds
- LL🇺🇸Travis RettenmaierRound of 32 · Lost to Janko Tipsarevic
- 🇧🇬Yordan KanevRound of 32 · Lost to Brian Wilson