Buenos Aires CH 2004
Oliver Marach won the title, beating Diego Moyano 6–2 6–3 in the final.
Main draw 32 players
- 1🇧🇷Flavio SarettaQuarterfinals · Lost to Fernando Vicente
- 2🇨🇿Jiri VanekRound of 32 · Lost to Gabriel Moraru
- 3🇺🇸Hugo ArmandoSemifinals · Lost to Oliver Marach
- 4🇧🇷Andre SaRound of 32 · Lost to Johannes Ager
- 5🇪🇨Nicolas LapenttiRound of 16 · Lost to Diego Moyano
- 6🇦🇷Juan Pablo BrzezickiRound of 32 · Lost to Mariano Puerta
- 7🇦🇷Juan Pablo GuzmanRound of 16 · Lost to Oliver Marach
- 8🇦🇷Sergio RoitmanRound of 32 · Lost to Emiliano Redondi
- 🇦🇹Oliver MarachFinal · Champion
- Q🇦🇷Diego MoyanoFinal · Lost to Oliver Marach
- 🇪🇸Fernando VicenteSemifinals · Lost to Diego Moyano
- 🇦🇷Carlos BerlocqQuarterfinals · Lost to Hugo Armando
- 🇷🇴Gabriel MoraruQuarterfinals · Lost to Oliver Marach
- 🇦🇹Johannes AgerQuarterfinals · Lost to Diego Moyano
- 🇦🇷Andres DellatorreRound of 16 · Lost to Gabriel Moraru
- 🇦🇷Cristian VillagranRound of 16 · Lost to Flavio Saretta
- Q🇦🇷Emiliano RedondiRound of 16 · Lost to Carlos Berlocq
- 🇨🇱Hermes GamonalRound of 16 · Lost to Hugo Armando
- 🇦🇷Mariano PuertaRound of 16 · Lost to Fernando Vicente
- 🇷🇴Victor IonitaRound of 16 · Lost to Johannes Ager
- Q🇦🇷Antonio PastorinoRound of 32 · Lost to Victor Ionita
- WC🇦🇷Brian DabulRound of 32 · Lost to Hermes Gamonal
- WC🇦🇷Diego VeronelliRound of 32 · Lost to Cristian Villagran
- WC🇦🇷Eduardo SchwankRound of 32 · Lost to Carlos Berlocq
- 🇧🇷Franco FerreiroRound of 32 · Lost to Diego Moyano
- WC🇦🇷Horacio ZeballosRound of 32 · Lost to Nicolas Lapentti
- 🇦🇷Ignacio Gonzalez KingRound of 32 · Lost to Fernando Vicente
- 🇵🇪Ivan MirandaRound of 32 · Lost to Hugo Armando
- 🇨🇿Jaroslav PospisilRound of 32 · Lost to Oliver Marach
- Q🇦🇷Juan Martin ArangurenRound of 32 · Lost to Andres Dellatorre
- 🇧🇷Julio SilvaRound of 32 · Lost to Flavio Saretta
- 🇧🇷Marcos DanielRound of 32 · Lost to Juan Pablo Guzman