# 2004 Open de Tenis Comunidad Valenciana – Singles

Juan Carlos Ferrero was the defending champion but lost in the semifinals to Fernando Verdasco.
Verdasco won in the final 7–6$^{(7–5)}$, 6–3 against Albert Montañés.

## Seeds

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
* Juan Carlos Ferrero (semifinals)
* Feliciano López (second round)
* Ivan Ljubičić (second round)
* Albert Costa (second round)
* David Sánchez (first round)
* Alberto Martín (semifinals)
* David Ferrer (quarterfinals)
* Rubén Ramírez Hidalgo (second round)

## 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 |
| 1 | J C Ferrero | 6 | 7 | | | | | | | | | | | | | | | | | | | |
| WC | I Matos Gil | 2 | 5 | | 1 | J C Ferrero | 6 | 7 | | | | | | | | | | | | | | |
| WC | G Burniol | 3 | 6 | 4 | | J Vacek | 3 | 5 | | | | | | | | | | | | | | |
| | J Vacek | 6 | 3 | 6 | | | | | | 1 | J C Ferrero | 6 | 6 | | | | | | | | | |
| | M Ančić | 6 | 6 | | | | | | | | M Ančić | 4 | 4 | | | | | | | | | |
| | H Levy | 1 | 1 | | | M Ančić | 7 | 6 | | | | | | | | | | | | | | |
| Q | Á Calatrava | 7$^9$ | 6$^1$ | 4 | 8 | R Ramírez Hidalgo | 5 | 2 | | | | | | | | | | | | | | |
| 8 | R Ramírez Hidalgo | 6$^7$ | 7$^7$ | 6 | | | | | | | | | | | 1 | J C Ferrero | 2 | 1 | | | | |
| 3 | I Ljubičić | 6 | 6 | | | | | | | | | | | | | F Verdasco | 6 | 6 | | | | |
| WC | G García-López | 3 | 4 | | 3 | I Ljubičić | 4 | 4 | | | | | | | | | | | | | | |
| | F Verdasco | 6 | 6 | | | F Verdasco | 6 | 6 | | | | | | | | | | | | | | |
| | A Portas | 1 | 4 | | | | | | | | F Verdasco | 6 | 6 | | | | | | | | | |
| | D van Scheppingen | 0 | 4 | | | | | | | 7 | D Ferrer | 2 | 3 | | | | | | | | | |
| | R Sluiter | 6 | 6 | | | R Sluiter | 2 | 4 | | | | | | | | | | | | | | |
| | G Lapentti | 4 | 3 | | 7 | D Ferrer | 6 | 6 | | | | | | | | | | | | | | |
| 7 | D Ferrer | 6 | 6 | | | | | | | | | | | | | | | | | Fernando Verdasco | 7$^7$ | 6 |
| 6 | A Martín | 6 | 6 | | | | | | | | | | | | | | | | | Albert Montañés | 6$^5$ | 3 |
| Q | N Almagro | 2 | 4 | | 6 | A Martín | 6 | 5 | 6 | | | | | | | | | | | | | |
| | Ó Hernández | 6$^5$ | 6 | 6$^5$ | | F Vicente | 3 | 7 | 4 | | | | | | | | | | | | | |
| | F Vicente | 7$^7$ | 2 | 7$^7$ | | | | | | 6 | A Martín | 6 | 6 | | | | | | | | | |
| Q | W Eschauer | 4 | 2 | | | | | | | | C Rochus | 1 | 2 | | | | | | | | | |
| | C Rochus | 6 | 6 | | | C Rochus | 6 | 6 | | | | | | | | | | | | | | |
| | G Blanco | 3 | 4 | | 4 | A Costa | 4 | 3 | | | | | | | | | | | | | | |
| 4 | A Costa | 6 | 6 | | | | | | | | | | | | 6 | A Martín | 6 | 2 | 2 | | | |
| 5 | D Sánchez | 7 | 2 | 2 | | | | | | | | | | | | A Montañés | 4 | 6 | 6 | | | |
| | À Corretja | 5 | 6 | 6 | | À Corretja | 4 | 4 | | | | | | | | | | | | | | |
| | S Koubek | 5 | 0 | | Q | M López | 6 | 6 | | | | | | | | | | | | | | |
| Q | M López | 7 | 6 | | | | | | | Q | M López | 6 | 2 | 0 | | | | | | | | |
| | A Montañés | 6 | 6 | | | | | | | | A Montañés | 2 | 6 | 6 | | | | | | | | |
| | J van Lottum | 3 | 1 | | | A Montañés | 4 | 6 | 6 | | | | | | | | | | | | | |
| | I Andreev | 4 | 2 | | 2 | F López | 6 | 2 | 4 | | | | | | | | | | | | | |
| 2 | F López | 6 | 6 | | | | | | | | | | | | | | | | | | | |