# 2003 TD Waterhouse Cup – Singles

Paradorn Srichaphan was the defending champion and won in the final 6–2, 6–4 against James Blake.

## Seeds

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
* Paradorn Srichaphan (champion)
* Gustavo Kuerten (quarterfinals)
* Tommy Robredo (second round)
* Fernando González (first round)
* Félix Mantilla (first round)
* Agustín Calleri (second round)
* Younes El Aynaoui (semifinals)
* Albert Costa (first 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 | P Srichaphan | 6 | 6 | | | | | | | | | | | | | | | | | | | |
| | N Davydenko | 3 | 4 | | 1 | P Srichaphan | 6 | 6 | | | | | | | | | | | | | | |
| | À Corretja | 5 | 2 | | | S Sargsian | 3 | 4 | | | | | | | | | | | | | | |
| | S Sargsian | 7 | 6 | | | | | | | 1 | P Srichaphan | 6 | 6 | | | | | | | | | |
| | A Clément | 4 | 4 | | | | | | | Q | J Morrison | 4 | 3 | | | | | | | | | |
| Q | J Morrison | 6 | 6 | | Q | J Morrison | 7$^9$ | 6 | | | | | | | | | | | | | | |
| | M Youzhny | 6 | 6 | | | M Youzhny | 6$^7$ | 3 | | | | | | | | | | | | | | |
| 5 | F Mantilla | 2 | 1 | | | | | | | | | | | | 1 | P Srichaphan | 6 | 6 | | | | |
| 4 | F González | 6 | 6$^8$ | 0 | | | | | | | | | | | WC | N Kiefer | 0 | 2 | | | | |
| | J I Chela | 4 | 7$^{10}$ | 6 | | J I Chela | 7$^7$ | 6 | | | | | | | | | | | | | | |
| | F Vicente | 6$^5$ | 1 | | | O Rochus | 6$^3$ | 1 | | | | | | | | | | | | | | |
| | O Rochus | 7$^7$ | 6 | | | | | | | | J I Chela | 1 | 0 | r | | | | | | | | |
| WC | N Kiefer | 4 | 7$^7$ | 6 | | | | | | WC | N Kiefer | 6 | 3 | | | | | | | | | |
| | P-H Mathieu | 6 | 6$^4$ | 3 | WC | N Kiefer | 6 | 6 | | | | | | | | | | | | | | |
| | F Saretta | 3 | | | | F Saretta | 3 | 1 | | | | | | | | | | | | | | |
| 8 | A Costa | 0 | r | | | | | | | | | | | | | | | | 1 | P Srichaphan | 6 | 6 |
| 6 | A Calleri | 6 | 7 | | | | | | | | | | | | | | | | | James Blake | 2 | 4 |
| | J-M Gambill | 4 | 5 | | 6 | A Calleri | 1 | 4 | | | | | | | | | | | | | | |
| | J Nieminen | 6 | 1 | | | J Nieminen | 6 | 6 | | | | | | | | | | | | | | |
| | F López | 3 | 1 | r | | | | | | | J Nieminen | 6 | 2 | 3 | | | | | | | | |
| | J Björkman | 1 | 6$^4$ | | | | | | | | J Blake | 4 | 6 | 6 | | | | | | | | |
| | J Blake | 6 | 7$^7$ | | | J Blake | 6 | 6 | | | | | | | | | | | | | | |
| | J Acasuso | 6 | 3 | 5 | 3 | T Robredo | 3 | 4 | | | | | | | | | | | | | | |
| 3 | T Robredo | 2 | 6 | 7 | | | | | | | | | | | | J Blake | 6 | 6 | | | | |
| 7 | Y El Aynaoui | 6$^4$ | 6 | 6 | | | | | | | | | | | 7 | Y El Aynaoui | 3 | 1 | | | | |
| Q | F Verdasco | 7$^7$ | 4 | 0 | 7 | Y El Aynaoui | 7$^7$ | 3 | | | | | | | | | | | | | | |
| Q | R de Voest | 6 | 6 | | Q | R de Voest | 6$^3$ | 0 | r | | | | | | | | | | | | | |
| WC | M Chang | 2 | 3 | | | | | | | 7 | Y El Aynaoui | 7$^7$ | 6 | | | | | | | | | |
| | D Sánchez | 6 | 4 | 3 | | | | | | WC/2 | G Kuerten | 6$^4$ | 4 | | | | | | | | | |
| Q | K Beck | 2 | 6 | 6 | Q | K Beck | 5 | 3 | | | | | | | | | | | | | | |
| LL | D Hrbatý | 4 | 6$^3$ | | WC/2 | G Kuerten | 7 | 6 | | | | | | | | | | | | | | |
| WC/2 | G Kuerten | 6 | 7$^7$ | | | | | | | | | | | | | | | | | | | |