# 2003 MercedesCup – Singles

Mikhail Youzhny was the defending champion but lost in the quarterfinals to Guillermo Coria.
Coria won in the final 6–2, 6–2, 6–1 against Tommy Robredo.

## Seeds

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated. All sixteen seeds received a bye to the second round.
* Carlos Moyá (second round)
* Guillermo Coria (champion)
* Rainer Schüttler (quarterfinals)
* Sébastien Grosjean (second round)
* Jiří Novák (third round)
* Fernando González (semifinals)
* Félix Mantilla (second round)
* Albert Costa (second round)
* Tommy Robredo (final)
* Younes El Aynaoui (third round)
* Jarkko Nieminen (third round)
* Mikhail Youzhny (quarterfinals)
* Max Mirnyi (third round)
* Nikolay Davydenko (third round)
* Àlex Corretja (third round)
* Ivan Ljubičić (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

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 6 | Fernando González | 2 | 1$^r$ | | | | | |
| 9 | Tommy Robredo | 6 | 4 | | | | | |
| 9 | Tommy Robredo | 6 | 4 | 9 | Tommy Robredo | 2 | 2 | 1 |
| | | | | 2 | Guillermo Coria | 6 | 6 | 6 |
| | Feliciano López | 4 | 0 | 2 | Guillermo Coria | 6 | 6 | 6 |
| 2 | Guillermo Coria | 6 | 6 | | | | | |

### Top half
#### Section 1

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 1 | C Moyá | 6$^5$ | 6$^2$ | | | | | | | | | | |
| | J Boutter | 6 | 2 | 1 | | T Behrend | 7$^7$ | 7$^7$ | | | | | | | | | | |
| | T Behrend | 3 | 6 | 6 | | | | | | | T Behrend | 6 | 6 | | | | | |
| Q | P Starace | 3 | 5 | | | | | | | 13 | M Mirnyi | 4 | 4 | | | | | |
| Q | M López | 6 | 7 | | Q | M López | 4 | 3 | | | | | | | | | | |
| | | | | | 13 | M Mirnyi | 6 | 6 | | | | | | | | | | |
| | | | | | | | | | | | | | | | | T Behrend | 5 | 3 |
| | | | | | | | | | | | | | | | 6 | F González | 7 | 6 |
| | | | | | 11 | J Nieminen | 6 | 4 | 6 | | | | | | | | | |
| | A Martín | 7$^7$ | 6 | | | A Martín | 2 | 6 | 4 | | | | | | | | | |
| | R Delgado | 6$^1$ | 3 | | | | | | | 11 | J Nieminen | 6$^2$ | 7$^7$ | 3 | | | | |
| | R Nadal | 7 | 6 | | | | | | | 6 | F González | 7$^7$ | 6$^5$ | 6 | | | | |
| WC | P Petzschner | 5 | 1 | | | R Nadal | 2 | 6 | 2 | | | | | | | | | |
| | | | | | 6 | F González | 6 | 3 | 6 | | | | | | | | | |

#### Section 2

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 4 | S Grosjean | 2 | 1 | | | | | | | | | | |
| | F Volandri | 6 | 3 | | | F Volandri | 6 | 6 | | | | | | | | | | |
| | D Sánchez | 0 | 0$^r$ | | | | | | | | F Volandri | 6 | 3 | 6 | | | | |
| Q | R Furlan | 4 | 1 | | | | | | | 14 | N Davydenko | 3 | 6 | 1 | | | | |
| | O Mutis | 6 | 6 | | | O Mutis | 0 | 6$^3$ | | | | | | | | | | |
| | | | | | 14 | N Davydenko | 6 | 7$^7$ | | | | | | | | | | |
| | | | | | | | | | | | | | | | | F Volandri | 4 | 2 |
| | | | | | | | | | | | | | | | 9 | T Robredo | 6 | 6 |
| | | | | | 9 | T Robredo | 6$^7$ | 6 | 7 | | | | | | | | | |
| | L Burgsmüller | 6 | 7 | | | L Burgsmüller | 7$^9$ | 3 | 5 | | | | | | | | | |
| | M Norman | 4 | 5 | | | | | | | 9 | T Robredo | 6 | 6$^6$ | 6 | | | | |
| Q | J Vaněk | 4 | 6 | 6 | | | | | | Q | J Vaněk | 2 | 7$^8$ | 3 | | | | |
| WC | S Greul | 6 | 1 | 3 | Q | J Vaněk | 7$^7$ | 6 | | | | | | | | | | |
| | | | | | 8 | A Costa | 6$^4$ | 3 | | | | | | | | | | |

### Bottom half
#### Section 3

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 7 | F Mantilla | 6 | 3 | 6$^7$ | | | | | | | | | |
| | R Mello | 1 | 4 | | | F López | 1 | 6 | 7$^9$ | | | | | | | | | |
| | F López | 6 | 6 | | | | | | | | F López | 3 | 6 | 6 | | | | |
| WC | A Popp | 3 | 2 | | | | | | | 10 | Y El Aynaoui | 6 | 4 | 3 | | | | |
| Q | G Etlis | 6 | 6 | | Q | G Etlis | 6$^4$ | 4 | | | | | | | | | | |
| | | | | | 10 | Y El Aynaoui | 7$^7$ | 6 | | | | | | | | | | |
| | | | | | | | | | | | | | | | | F López | 6 | 6 |
| | | | | | | | | | | | | | | | 3 | R Schüttler | 2 | 4 |
| | | | | | 15 | À Corretja | 4 | 6 | 7 | | | | | | | | | |
| | M Kratochvil | 6 | 2 | 3 | | O Rochus | 6 | 1 | 5 | | | | | | | | | |
| | O Rochus | 3 | 6 | 6 | | | | | | 15 | À Corretja | 4 | 4 | | | | | |
| WC | M Abel | 2 | 6 | 7$^7$ | | | | | | 3 | R Schüttler | 6 | 6 | | | | | |
| | A Dupuis | 6 | 3 | 6$^5$ | WC | M Abel | 2 | 4 | | | | | | | | | | |
| | | | | | 3 | R Schüttler | 6 | 6 | | | | | | | | | | |

#### Section 4

| First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | 5 | J Novák | 6 | 6 | | | | | | | | | |
| | F Saretta | 4 | 2 | | S Sargsian | 4 | 4 | | | | | | | | | |
| | S Sargsian | 6 | 6 | | | | | | 5 | J Novák | 6$^1$ | 4 | | | | |
| | N Lapentti | 6 | 6 | | | | | | 12 | M Youzhny | 7$^7$ | 6 | | | | |
| | S Koubek | 4 | 2 | | N Lapentti | 3 | 6 | 3 | | | | | | | | |
| | | | | 12 | M Youzhny | 6 | 2 | 6 | | | | | | | | |
| | | | | | | | | | | | | | 12 | M Youzhny | 0 | 0 |
| | | | | | | | | | | | | | 2 | G Coria | 6 | 6 |
| | | | | 16 | I Ljubičić | 6$^3$ | 1 | | | | | | | | | |
| | D Ferrer | 7$^7$ | 6 | | D Ferrer | 7$^7$ | 6 | | | | | | | | | |
| | M Zabaleta | 6$^3$ | 4 | | | | | | | D Ferrer | 1 | 1 | | | | |
| | P-H Mathieu | 6 | 6 | | | | | | 2 | G Coria | 6 | 6 | | | | |
| Q | T Zíb | 1 | 2 | | P-H Mathieu | 5 | 3 | | | | | | | | | |
| | | | | 2 | G Coria | 7 | 6 | | | | | | | | | |