# 2004 Abierto Mexicano Telefonica Movistar – Men's singles

Agustín Calleri was the defending champion but lost in the first round to Luis Horna.
Carlos Moyá won in the final 6–3, 6–0 against Fernando Verdasco.

## Seeds

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
* Carlos Moyá (champion)
* Nicolás Massú (quarterfinals)
* Agustín Calleri (first round)
* Mariano Zabaleta (second round)
* Félix Mantilla Botella (second round)
* Gastón Gaudio (second round)
* Juan Ignacio Chela (semifinals)
* Filippo Volandri (quarterfinals)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking
| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 1 | C Moyá | 6 | 6 | | | | | | | | | | | | | | | | | | | | |
| | D Sánchez | 3 | 3 | | 1 | C Moyá | 3 | 6 | 6 | | | | | | | | | | | | | | |
| | C Rochus | 6$^4$ | 6 | 3 | | R Gasquet | 6 | 3 | 2 | | | | | | | | | | | | | | |
| | R Gasquet | 7$^7$ | 3 | 6 | | | | | | 1 | C Moyá | 3 | 7 | 6 | | | | | | | | | |
| | H Levy | 6 | 5 | 4 | | | | | | 8 | F Volandri | 6 | 5 | 2 | | | | | | | | | |
| | S Koubek | 3 | 7 | 6 | | S Koubek | 4 | 2 | | | | | | | | | | | | | | | |
| | G Blanco | 5 | 6 | 5 | 8 | F Volandri | 6 | 6 | | | | | | | | | | | | | | | |
| 7 | F Volandri | 7 | 4 | 7 | | | | | | | | | | | 1 | C Moyá | 6 | 7$^7$ | | | | | |
| 3 | A Calleri | 6$^5$ | 4 | | | | | | | | | | | | 7 | J I Chela | 2 | 6$^4$ | | | | | |
| | L Horna | 7$^7$ | 6 | | | L Horna | 6 | 4 | 6$^2$ | | | | | | | | | | | | | | |
| Q | D Norman | 4 | 6 | 6$^6$ | | Ó Hernández | 3 | 6 | 7$^7$ | | | | | | | | | | | | | | |
| | Ó Hernández | 6 | 3 | 7$^8$ | | | | | | | Ó Hernández | 6 | 0 | 2 | | | | | | | | | |
| WC | M Gallardo-Valles | 2 | 6$^4$ | | | | | | | 7 | J I Chela | 3 | 6 | 6 | | | | | | | | | |
| | D Ferrer | 6 | 7$^7$ | | | D Ferrer | 3 | 3 | | | | | | | | | | | | | | | |
| | A Montañés | 3 | 4 | | 7 | J I Chela | 6 | 6 | | | | | | | | | | | | | | | |
| 7 | J I Chela | 6 | 6 | | | | | | | | | | | | | | | | | 1 | Carlos Moyá | 6 | 6 |
| 6 | G Gaudio | 6$^2$ | 7$^7$ | 6 | | | | | | | | | | | | | | | | | Fernando Verdasco | 3 | 0 |
| | J Acasuso | 7$^7$ | 6$^1$ | 1 | 6 | G Gaudio | 4 | 3 | | | | | | | | | | | | | | | |
| Q | M López | 6 | 6$^3$ | 5 | WC | G Cañas | 6 | 6 | | | | | | | | | | | | | | | |
| WC | G Cañas | 4 | 7$^7$ | 7 | | | | | | WC | G Cañas | 6 | 6 | | | | | | | | | | |
| | R Ramírez Hidalgo | 6 | 7$^7$ | | | | | | | | R Ramírez Hidalgo | 2 | 0 | | | | | | | | | | |
| | A Portas | 3 | 6$^4$ | | | R Ramírez Hidalgo | 7 | 6 | | | | | | | | | | | | | | | |
| | G Lapentti | 7$^7$ | 2 | 3 | 4 | M Zabaleta | 5 | 3 | | | | | | | | | | | | | | | |
| 4 | M Zabaleta | 6$^4$ | 6 | 6 | | | | | | | | | | | WC | G Cañas | 3 | 6 | 3 | | | | |
| 5 | F Mantilla | 6 | 7$^7$ | | | | | | | | | | | | | F Verdasco | 6 | 3 | 6 | | | | |
| Q | O Patience | 3 | 6$^4$ | | 5 | F Mantilla | 6 | 4 | 0 | | | | | | | | | | | | | | |
| | F Verdasco | 6 | 6 | | | F Verdasco | 4 | 6 | 6 | | | | | | | | | | | | | | |
| | T Behrend | 2 | 4 | | | | | | | | F Verdasco | 6 | 6 | | | | | | | | | | |
| Q | J Salzenstein | 6 | 3 | 6 | | | | | | 2 | N Massú | 3 | 4 | | | | | | | | | | |
| | N Lapentti | 1 | 6 | 1 | Q | J Salzenstein | 1 | 3 | | | | | | | | | | | | | | | |
| WC | A Hernández | 2 | 0 | | 2 | N Massú | 6 | 6 | | | | | | | | | | | | | | | |
| 2 | N Massú | 6 | 6 | | | | | | | | | | | | | | | | | | | | |