Quito CH 2003
Giovanni Lapentti won the title, beating Ricardo Mello 6–3 6–7(8) 6–3 in the final.
Main draw 32 players
- 1🇧🇪Dick NormanRound of 32 · Lost to Cristian Kordasz
- 2🇪🇨Giovanni LapenttiFinal · Champion
- 3🇧🇷Ricardo MelloFinal · Lost to Giovanni Lapentti
- 4🇧🇷Francisco CostaRound of 16 · Lost to Glenn Weiner
- 5🇦🇷Juan Pablo GuzmanQuarterfinals · Lost to Glenn Weiner
- 6🇺🇸Kevin KimRound of 32 · Lost to Kile Sherry
- 7🇭🇷Lovro ZovkoQuarterfinals · Lost to Bruno Soares
- 8🇦🇿Emin AgaevRound of 32 · Lost to Rogier Wassen
- 🇧🇷Bruno SoaresSemifinals · Lost to Ricardo Mello
- Q🇺🇸Glenn WeinerSemifinals · Lost to Giovanni Lapentti
- 🇲🇽Alejandro Hernandez#463Quarterfinals · Lost to Giovanni Lapentti
- 🇨🇿Jaroslav PospisilQuarterfinals · Lost to Ricardo Mello
- 🇧🇷Alexandre SimoniRound of 16 · Lost to Lovro Zovko
- 🇦🇷Cristian KordaszRound of 16 · Lost to Bruno Soares
- 🇺🇸Hugo ArmandoRound of 16 · Lost to Ricardo Mello
- WC🇺🇸Kile SherryRound of 16 · Lost to Alejandro Hernandez
- 🇨🇱Phillip HarboeRound of 16 · Lost to Juan Pablo Guzman
- 🇳🇱Rogier WassenRound of 16 · Lost to Jaroslav Pospisil
- 🇲🇽Santiago GonzalezRound of 16 · Lost to Giovanni Lapentti
- 🇨🇱Adrian GarciaRound of 32 · Lost to Glenn Weiner
- 🇨🇴Alejandro FallaRound of 32 · Lost to Alejandro Hernandez
- Q🇦🇷Antonio CouvertRound of 32 · Lost to Alexandre Simoni
- Q🇪🇨Carlos AvellanRound of 32 · Lost to Juan Pablo Guzman
- 🇷🇸Dusan VemicRound of 32 · Lost to Lovro Zovko
- 🇧🇷Franco FerreiroRound of 32 · Lost to Hugo Armando
- 🇦🇷Ignacio HirigoyenRound of 32 · Lost to Francisco Costa
- 🇻🇪Jose De ArmasRound of 32 · Lost to Giovanni Lapentti
- WC🇺🇸Joshua OlivasRound of 32 · Lost to Jaroslav Pospisil
- 🇦🇷Juan Pablo BrzezickiRound of 32 · Lost to Bruno Soares
- WC🇺🇸Kris NathanRound of 32 · Lost to Santiago Gonzalez
- WC🇪🇨Luis Adrian MorejonRound of 32 · Lost to Ricardo Mello
- Q🇧🇷Ricardo SchlachterRound of 32 · Lost to Phillip Harboe