Mexican Open 2003
Agustin Calleri won the title, beating Mariano Zabaleta 7–5 3–6 6–3 in the final.
Main draw 32 players
- 1🇪🇸Carlos MoyaQuarterfinals · Lost to Felix Mantilla
- 2🇦🇷David NalbandianRound of 16 · Lost to Mariano Zabaleta
- 3🇦🇷Gaston GaudioRound of 16 · Lost to Agustin Calleri
- 4🇨🇱Fernando GonzalezQuarterfinals · Lost to Gustavo Kuerten
- 5🇦🇷Juan Ignacio ChelaRound of 32 · Lost to Felix Mantilla
- 6🇧🇷Gustavo KuertenSemifinals · Lost to Mariano Zabaleta
- 7🇨🇱Marcelo RiosQuarterfinals · Lost to Agustin Calleri
- 8🇪🇨Nicolas LapenttiRound of 32 · Lost to Luis Horna
- 🇦🇷Agustin CalleriFinal · Champion
- 🇦🇷Mariano ZabaletaFinal · Lost to Agustin Calleri
- 🇪🇸Felix MantillaSemifinals · Lost to Agustin Calleri
- Q🇵🇪Ivan MirandaQuarterfinals · Lost to Mariano Zabaleta
- 🇪🇸David FerrerRound of 16 · Lost to Gustavo Kuerten
- 🇪🇸Fernando VicenteRound of 16 · Lost to Felix Mantilla
- LLCRCJuan Antonio MarinRound of 16 · Lost to Marcelo Rios
- 🇵🇪Luis HornaRound of 16 · Lost to Ivan Miranda
- LL🇧🇷Ricardo MelloRound of 16 · Lost to Carlos Moya
- 🇦🇲Sargis SargsianRound of 16 · Lost to Fernando Gonzalez
- 🇪🇸Albert MontanesRound of 32 · Lost to Sargis Sargsian
- 🇪🇸Albert PortasRound of 32 · Lost to David Ferrer
- 🇪🇸Alberto Martin#364Round of 32 · Lost to Fernando Vicente
- 🇧🇷Andre SaRound of 32 · Lost to Ivan Miranda
- 🇪🇸David SanchezRound of 32 · Lost to Gaston Gaudio
- 🇧🇷Fernando MeligeniRound of 32 · Lost to Juan Antonio Marin
- Q🇮🇹Filippo VolandriRound of 32 · Lost to Mariano Zabaleta
- 🇧🇷Flavio SarettaRound of 32 · Lost to Carlos Moya
- WC🇪🇸Francisco ClavetRound of 32 · Lost to Ricardo Mello
- 🇦🇷Franco SquillariRound of 32 · Lost to Marcelo Rios
- WC🇲🇽Miguel Gallardo VallesRound of 32 · Lost to Agustin Calleri
- Q🇫🇷Nicolas CoutelotRound of 32 · Lost to Gustavo Kuerten
- 🇨🇱Nicolas MassuRound of 32 · Lost to David Nalbandian
- Q🇪🇸Ruben Ramirez HidalgoRound of 32 · Lost to Fernando Gonzalez