# 2003 Hamburg Masters – Singles

Guillermo Coria defeated Agustín Calleri in the final, 6–3, 6–4, 6–4 to win the singles tennis title at the 2003 Hamburg European Open.
Roger Federer was the defending champion, but lost in the third round to Mark Philippoussis.

## Seeds

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
* Lleyton Hewitt (third round)
* Carlos Moyá (second round)
* Roger Federer (third round)
* Andy Roddick (second round)
* Albert Costa (second round)
* Jiří Novák (first round)
* Paradorn Srichaphan (first round)
* David Nalbandian (semifinals)
* Rainer Schüttler (third round)
* Sébastien Grosjean (second round)
* Gustavo Kuerten (third round)
* Guillermo Coria (champion)
* Àlex Corretja (first round)
* Tommy Robredo (second round)
* Fernando González (quarterfinals)
* James Blake (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

### Finals

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final | Final | |
| 15 | Fernando González | 7 | 3 | 4 | | | | | | | | | | | | |
| 8 | David Nalbandian | 5 | 6 | 6 | | | | | | | | | | | | |
| 8 | David Nalbandian | 5 | 6 | 6 | 8 | David Nalbandian | 4 | 1 | | | | | | | | |
| | | | | | | Agustín Calleri | 6 | 6 | | | | | | | | |
| | Agustín Calleri | 7 | 6 | | | Agustín Calleri | 6 | 6 | | | | | | | | |
| | Wayne Ferreira | 5 | 2 | | | | | | | | | | | | | |
| | Wayne Ferreira | 5 | 2 | | | | | | | | Agustín Calleri | 3 | 4 | 4 | | |
| | | | | | | | | | | 12 | Guillermo Coria | 6 | 6 | 6 | | |
| 12 | Guillermo Coria | 6 | 6 | | | | | | | | | | | | 12 | Guillermo Coria | 6 | 6 | 6 |
| | Mark Philippoussis | 2 | 0 | | | | | | | | | | | | | |
| | Mark Philippoussis | 2 | 0 | | 12 | Guillermo Coria | 6 | 6$^3$ | 6 | | | | | | | |
| | | | | | | Gastón Gaudio | 3 | 7$^7$ | 0 | | | | | | | |
| | Olivier Rochus | 1 | 1 | | | Gastón Gaudio | 3 | 7$^7$ | 0 | | | | | | | |
| | Gastón Gaudio | 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 | Quarterfinals |
| 1 | L Hewitt | 6 | 4 | 6 | | | | | | | | | | | | | | | |
| WC | M Hantschk | 1 | 6 | 4 | 1 | L Hewitt | 6$^7$ | 6 | 7$^8$ | | | | | | | | | | |
| | N Lapentti | 4 | 2 | | | A Clément | 7$^9$ | 4 | 6$^6$ | | | | | | | | | | |
| | A Clément | 6 | 6 | | | | | | | 1 | L Hewitt | 1 | 6 | 0 | | | | | |
| Q | A Martín | 0 | 4 | | | | | | | 15 | F González | 6 | 3 | 6 | | | | | |
| | F Mantilla | 6 | 6 | | | F Mantilla | 2 | 1 | | | | | | | | | | | |
| LL | O Mutis | 2 | 6 | 5 | 15 | F González | 6 | 6 | | | | | | | | | | | |
| 15 | F González | 6 | 2 | 7 | | | | | | | | | | | 15 | F González | 7 | 3 | 4 |
| 9 | R Schüttler | 7 | 6 | | | | | | | | | | | | 8 | D Nalbandian | 5 | 6 | 6 |
| | D Ferrer | 5 | 1 | | 9 | R Schüttler | 6 | 4 | 6 | | | | | | | | | | |
| Q | H Armando | 4 | 4 | | WC | L Burgsmüller | 4 | 6 | 4 | | | | | | | | | | |
| WC | L Burgsmüller | 6 | 6 | | | | | | | 9 | R Schüttler | 6$^3$ | 2 | | | | | | |
| Q | A Dupuis | 6 | 6 | | | | | | | 8 | D Nalbandian | 7$^7$ | 6 | | | | | | |
| | F Santoro | 3 | 3 | | Q | A Dupuis | 7 | 2 | 3 | | | | | | | | | | |
| LL | J-R Lisnard | 3 | 3 | | 8 | D Nalbandian | 5 | 6 | 6 | | | | | | | | | | |
| 8 | D Nalbandian | 6 | 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 | Quarterfinals | Quarterfinals | Quarterfinals |
| 4 | A Roddick | 6 | 6 | | | | | | | | | | | | | |
| | I Ljubičić | 4 | 4 | | 4 | A Roddick | 6 | 2 | 3 | | | | | | | |
| | A Calleri | 3 | 7$^7$ | 7 | | A Calleri | 3 | 6 | 6 | | | | | | | |
| | H-T Lee | 6 | 6$^1$ | 5 | | | | | | | A Calleri | 6 | 6 | | | |
| | K Kučera | 5 | 4 | | | | | | | | M Zabaleta | 3 | 0 | | | |
| | M Zabaleta | 7 | 6 | | | M Zabaleta | 3 | 6 | 6 | | | | | | | |
| | R Štěpánek | 4 | 3 | | 14 | T Robredo | 6 | 3 | 1 | | | | | | | |
| 14 | T Robredo | 6 | 6 | | | | | | | | | | | A Calleri | 7 | 6 |
| 11 | G Kuerten | 6 | 6 | | | | | | | | | | | W Ferreira | 5 | 2 |
| | J I Chela | 2 | 4 | | 11 | G Kuerten | 7 | 6 | | | | | | | | |
| Q | A Voinea | 0 | 2 | | | N Davydenko | 5 | 0 | | | | | | | | |
| | N Davydenko | 6 | 6 | | | | | | | 11 | G Kuerten | 6$^4$ | 4 | | | |
| | W Ferreira | 6 | 6 | | | | | | | | W Ferreira | 7$^7$ | 6 | | | |
| WC | A Waske | 3 | 2 | | | W Ferreira | 6 | 6 | | | | | | | | |
| | F López | 6 | 6 | | | F López | 1 | 2 | | | | | | | | |
| 7 | P Srichaphan | 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 |
| 6 | J Novák | 1 | 4 | | | | | | | | | | | | | | | |
| | M Youzhny | 6 | 6 | | | M Youzhny | 6$^7$ | 6 | 6 | | | | | | | | | |
| LL | K Beck | 6 | 3 | 6 | LL | K Beck | 7$^9$ | 4 | 2 | | | | | | | | | |
| | W Arthurs | 4 | 6 | 3 | | | | | | | M Youzhny | 3 | 3 | | | | | |
| | J Nieminen | 6 | 0 | 6 | | | | | | 12 | G Coria | 6 | 6 | | | | | |
| | S Koubek | 4 | 6 | 1 | | J Nieminen | 3 | 4 | | | | | | | | | | |
| | V Spadea | 2 | 2 | | 12 | G Coria | 6 | 6 | | | | | | | | | | |
| 12 | G Coria | 6 | 6 | | | | | | | | | | | | 12 | G Coria | 6 | 6 |
| 13 | À Corretja | 6$^3$ | 6 | 3 | | | | | | | | | | | | M Philippoussis | 2 | 0 |
| | X Malisse | 7$^7$ | 4 | 6 | | X Malisse | 3 | 6$^4$ | | | | | | | | | | |
| | R Sluiter | 4 | 5 | | | M Philippoussis | 6 | 7$^7$ | | | | | | | | | | |
| | M Philippoussis | 6 | 7 | | | | | | | | M Philippoussis | 6 | 2 | 6 | | | | |
| | D Hrbatý | 7$^7$ | 4 | 4 | | | | | | 3 | R Federer | 3 | 6 | 3 | | | | |
| Q | S Sargsian | 6$^4$ | 6 | 6 | Q | S Sargsian | 1 | 1 | | | | | | | | | | |
| | M Mirnyi | 3 | 3 | | 3 | R Federer | 6 | 6 | | | | | | | | | | |
| 3 | R Federer | 6 | 6 | | | | | | | | | | | | | | | |

#### Section 4

| 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 | Quarterfinals | Quarterfinals | Quarterfinals |
| 5 | A Costa | 6 | 6 | | | | | | | | | | | | | |
| WC | N Kiefer | 4 | 4 | | 5 | A Costa | 6 | 3 | 6$^3$ | | | | | | | |
| | Y El Aynaoui | 6$^7$ | 4 | | | O Rochus | 3 | 6 | 7$^7$ | | | | | | | |
| | O Rochus | 7$^9$ | 6 | | | | | | | | O Rochus | 6 | 6 | | | |
| | J-M Gambill | 5 | 4 | | | | | | | | T Henman | 4 | 3 | | | |
| | T Henman | 7 | 6 | | | T Henman | 6 | 3 | 6 | | | | | | | |
| Q | F Volandri | 3 | 4 | | 10 | S Grosjean | 0 | 6 | 2 | | | | | | | |
| 10 | S Grosjean | 6 | 6 | | | | | | | | | | | O Rochus | 1 | 1 |
| 16 | J Blake | 7$^7$ | 1 | 2 | | | | | | | | | | G Gaudio | 6 | 6 |
| | G Gaudio | 6$^3$ | 6 | 6 | | G Gaudio | 6$^8$ | 6 | 6 | | | | | | | |
| | M Fish | 7 | 4 | 2 | | D Sánchez | 7$^{10}$ | 3 | 1 | | | | | | | |
| | D Sánchez | 5 | 6 | 6 | | | | | | | G Gaudio | 6 | 6 | | | |
| | P-H Mathieu | 5 | 4 | | | | | | | Q | R Nadal | 2 | 2 | | | |
| Q | R Nadal | 7 | 6 | | Q | R Nadal | 7 | 6 | | | | | | | | |
| Q | S Draper | 3 | 7 | 3 | 2 | C Moyá | 5 | 4 | | | | | | | | |
| 2 | C Moyá | 6 | 5 | 6 | | | | | | | | | | | | |