Leon CH 2004
Jeff Salzenstein won the title, beating Wesley Moodie 6–3 3–6 7–5 in the final.
Main draw 32 players
- 1🇧🇪Gilles ElseneerRound of 16 · Lost to Danai Udomchoke
- 2🇹🇼Yen Hsun LuRound of 32 · Lost to Alejandro Falla
- 3🇿🇦Wesley MoodieFinal · Lost to Jeff Salzenstein
- 4🇧🇪Dick NormanRound of 32 · Lost to Adrian Garcia
- 5🇺🇸Jeff SalzensteinFinal · Champion
- 6🇧🇷Ricardo MelloQuarterfinals · Lost to Alejandro Hernandez
- 7🇨🇭Ivo HeubergerQuarterfinals · Lost to Edouard Roger-Vasselin
- 8🇨🇦Frederic NiemeyerRound of 32 · Lost to Franco Ferreiro
- WC🇲🇽Alejandro Hernandez#463Semifinals · Lost to Wesley Moodie
- Q🇫🇷Edouard Roger-VasselinSemifinals · Lost to Jeff Salzenstein
- 🇹🇭Danai UdomchokeQuarterfinals · Lost to Jeff Salzenstein
- 🇧🇷Franco FerreiroQuarterfinals · Lost to Wesley Moodie
- 🇨🇱Adrian GarciaRound of 16 · Lost to Edouard Roger-Vasselin
- 🇨🇴Alejandro FallaRound of 16 · Lost to Alejandro Hernandez
- 🇵🇪Ivan MirandaRound of 16 · Lost to Jeff Salzenstein
- 🇹🇼Jimmy WangRound of 16 · Lost to Ricardo Mello
- 🇷🇴Razvan SabauRound of 16 · Lost to Franco Ferreiro
- 🇨🇿Tomas CaklRound of 16 · Lost to Wesley Moodie
- 🇫🇮Tuomas KetolaRound of 16 · Lost to Ivo Heuberger
- 🇬🇧Arvind ParmarRound of 32 · Lost to Gilles Elseneer
- Q🇫🇷Florent SerraRound of 32 · Lost to Tuomas Ketola
- WC🇲🇽Francisco GallardoRound of 32 · Lost to Tomas Cakl
- Q🇦🇷Gustavo MarcaccioRound of 32 · Lost to Jimmy Wang
- Q🇸🇪Jacob AdaktussonRound of 32 · Lost to Ivo Heuberger
- LL🇫🇷Jean Francois BachelotRound of 32 · Lost to Ivan Miranda
- WC🇲🇽Juan Manuel ElizondoRound of 32 · Lost to Danai Udomchoke
- 🇫🇷Julien JeanpierreRound of 32 · Lost to Alejandro Hernandez
- 🇨🇭Marco ChiudinelliRound of 32 · Lost to Ricardo Mello
- 🇸🇰Michal MertinakRound of 32 · Lost to Razvan Sabau
- WC🇲🇽Miguel Gallardo VallesRound of 32 · Lost to Wesley Moodie
- 🇮🇱Noam OkunRound of 32 · Lost to Jeff Salzenstein
- 🇦🇷Sergio RoitmanRound of 32 · Lost to Edouard Roger-Vasselin