# 2003 CAM Open Comunidad Valenciana – Singles

Gastón Gaudio was the defending champion but lost in the quarterfinals to Flávio Saretta.
Juan Carlos Ferrero won in the final 6–2, 6–4 against Christophe Rochus.

## 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 (champion)
* Marat Safin (first round)
* Àlex Corretja (first round)
* Gastón Gaudio (quarterfinals)
* Agustín Calleri (quarterfinals)
* Mariano Zabaleta (first round)
* José Acasuso (first round)
* David Sánchez (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 | Final | Final | Final | Final |
| 1 | J C Ferrero | 6 | 6 | | | | | | | | | | | | | | | | | | | |
| WC | G García-López | 4 | 4 | | 1 | J C Ferrero | 6 | 6 | | | | | | | | | | | | | | |
| | A Portas | 6 | 6 | | | A Portas | 4 | 4 | | | | | | | | | | | | | | |
| | K Beck | 2 | 2 | | | | | | | 1 | J C Ferrero | 6 | 6 | | | | | | | | | |
| | D Hrbatý | 7 | 4 | 7 | | | | | | 5 | A Calleri | 3 | 4 | | | | | | | | | |
| | M Norman | 5 | 6 | 5 | | D Hrbatý | 1 | 7 | 2 | | | | | | | | | | | | | |
| | I Kunitsyn | 4 | 0 | | 5 | A Calleri | 6 | 5 | 6 | | | | | | | | | | | | | |
| 5 | A Calleri | 6 | 6 | | | | | | | | | | | | 1 | J C Ferrero | 7$^7$ | 6 | | | | |
| 4 | G Gaudio | 6 | 6 | | | | | | | | | | | | | F Saretta | 6$^3$ | 2 | | | | |
| | A Sá | 1 | 1 | | 4 | G Gaudio | 3 | 6 | 6 | | | | | | | | | | | | | |
| Q | Á Calatrava | 3 | 1 | | | G Blanco | 6 | 4 | 4 | | | | | | | | | | | | | |
| | G Blanco | 6 | 6 | | | | | | | 4 | G Gaudio | 6 | 6$^3$ | 3 | | | | | | | | |
| Q | F Verdasco | 6$^7$ | 0 | | | | | | | | F Saretta | 4 | 7$^7$ | 6 | | | | | | | | |
| Q | F Čermák | 7$^9$ | 6 | | Q | F Čermák | 6$^3$ | 4 | | | | | | | | | | | | | | |
| | F Saretta | 6 | 6 | | | F Saretta | 7$^7$ | 6 | | | | | | | | | | | | | | |
| 6 | M Zabaleta | 1 | 3 | | | | | | | | | | | | | | | | 1 | Juan Carlos Ferrero | 6 | 6 |
| 8 | D Sánchez | 3 | 6 | 6 | | | | | | | | | | | | | | | | Christophe Rochus | 2 | 4 |
| Q | O Patience | 6 | 4 | 2 | 8 | D Sánchez | 4 | 3 | | | | | | | | | | | | | | |
| | A Martín | 2 | 6$^4$ | | | N Massú | 6 | 6 | | | | | | | | | | | | | | |
| | N Massú | 6 | 7$^7$ | | | | | | | | N Massú | 3 | 4 | | | | | | | | | |
| | F López | 6$^1$ | 6 | 3 | | | | | | | F Vicente | 6 | 6 | | | | | | | | | |
| | F Vicente | 7$^7$ | 3 | 6 | | F Vicente | 6$^6$ | 6 | 6 | | | | | | | | | | | | | |
| | A Dupuis | 5 | 6 | 6 | | A Dupuis | 7$^8$ | 1 | 3 | | | | | | | | | | | | | |
| WC/3 | À Corretja | 7 | 3 | 4 | | | | | | | | | | | | F Vicente | 3 | 2 | | | | |
| 7 | J Acasuso | 4 | 6$^7$ | | | | | | | | | | | | | C Rochus | 6 | 6 | | | | |
| | M Hipfl | 6 | 7$^9$ | | | M Hipfl | 4 | 0 | | | | | | | | | | | | | | |
| | A Montañés | 6 | 6$^3$ | 2 | | C Rochus | 6 | 6 | | | | | | | | | | | | | | |
| | C Rochus | 3 | 7$^7$ | 6 | | | | | | | C Rochus | 6 | 6 | | | | | | | | | |
| | S Sargsian | 6 | 6 | | | | | | | | S Sargsian | 2 | 2 | | | | | | | | | |
| | D Ferrer | 4 | 1 | | | S Sargsian | 7 | 3 | 6 | | | | | | | | | | | | | |
| | F Squillari | 6 | 5 | 6 | | F Squillari | 5 | 6 | 3 | | | | | | | | | | | | | |
| WC/2 | M Safin | 4 | 7 | 2 | | | | | | | | | | | | | | | | | | |