Leon CH 2003
Alex Bogomolov Jr won the title, beating George Bastl 7–6(4) 6–7(3) 6–4 in the final.
Main draw 32 players
- 1🇨🇿Jan VacekQuarterfinals · Lost to George Bastl
- 2🇷🇺Alex Bogomolov JrFinal · Champion
- 3🇦🇹Julian KnowleRound of 16 · Lost to Frederic Niemeyer
- 4🇧🇪Dick NormanRound of 32 · Lost to Alexander Peya
- 5🇫🇷Jerome GolmardSemifinals · Lost to Alex Bogomolov Jr
- 6🇵🇭Eric TainoRound of 32 · Lost to Alejandro Hernandez
- 7🇦🇷Mariano DelfinoRound of 32 · Lost to Ota Fukarek
- 8🇨🇭George BastlFinal · Lost to Alex Bogomolov Jr
- Q🇲🇽Alejandro Hernandez#469Semifinals · Lost to George Bastl
- 🇦🇹Alexander PeyaQuarterfinals · Lost to Jerome Golmard
- 🇫🇷Florent SerraQuarterfinals · Lost to Alex Bogomolov Jr
- 🇨🇦Frederic NiemeyerQuarterfinals · Lost to Alejandro Hernandez
- 🇦🇷Carlos BerlocqRound of 16 · Lost to Alex Bogomolov Jr
- Q🇩🇪Frank MoserRound of 16 · Lost to Alexander Peya
- 🇪🇨Giovanni LapenttiRound of 16 · Lost to George Bastl
- 🇧🇷Marcos DanielRound of 16 · Lost to Jerome Golmard
- 🇲🇽Miguel Gallardo VallesRound of 16 · Lost to Alejandro Hernandez
- 🇨🇿Ota FukarekRound of 16 · Lost to Florent Serra
- WC🇲🇽Santiago GonzalezRound of 16 · Lost to Jan Vacek
- 🇧🇷Alexandre SimoniRound of 32 · Lost to Carlos Berlocq
- 🇦🇷Andres DellatorreRound of 32 · Lost to Giovanni Lapentti
- WC🇲🇽Daniel GarzaRound of 32 · Lost to Alex Bogomolov Jr
- 🇨🇱Hermes GamonalRound of 32 · Lost to Florent Serra
- 🇦🇺Jaymon CrabbRound of 32 · Lost to Frederic Niemeyer
- 🇳🇱Jean Julien RojerRound of 32 · Lost to Marcos Daniel
- WC🇲🇽Juan Manuel ElizondoRound of 32 · Lost to Jan Vacek
- 🇺🇸Kevin KimRound of 32 · Lost to Santiago Gonzalez
- WC🇲🇽Marcelo AmadorRound of 32 · Lost to Frank Moser
- 🇩🇪Markus HantschkRound of 32 · Lost to Jerome Golmard
- Q🇨🇴Michael QuinteroRound of 32 · Lost to Julian Knowle
- Q🇺🇸Trace FieldingRound of 32 · Lost to George Bastl
- 🇺🇸Zack FleishmanRound of 32 · Lost to Miguel Gallardo Valles