# 2004 Open de Moselle – Singles

Arnaud Clément was the defending champion, but lost in the quarterfinals to Jérôme Haehnel.
Haehnel, who entered the tournament as a qualifier, won the title by defeating Richard Gasquet 7–6$^{(11–9)}$, 6–4 in the final.

## Seeds

* Ivan Ljubičić (quarterfinals)
* Xavier Malisse (first round, retired)
* José Acasuso (first round)
* Olivier Rochus (first round)
* Juan Mónaco (first round)
* Julien Benneteau (second round)
* Dennis van Scheppingen (first round)
* Gilles Müller (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

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| | Paul-Henri Mathieu | 7$^7$ | 6$^4$ | 6$^1$ | | | | |
| Q | Jérôme Haehnel | 6$^5$ | 7$^7$ | 7$^7$ | | | | |
| Q | Jérôme Haehnel | 6$^5$ | 7$^7$ | 7$^7$ | Q | Jérôme Haehnel | 7$^{11}$ | 6 |
| | | | | | WC | Richard Gasquet | 6$^9$ | 4 |
| | Jeff Morrison | 1 | 4 | | WC | Richard Gasquet | 6$^9$ | 4 |
| WC | Richard Gasquet | 6 | 6 | | | | | |

### Top half

| 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 |
| 1 | I Ljubičić | 6 | 6 | | | | | | | | | | | | | | | | |
| | V Hănescu | 4 | 4 | | 1 | I Ljubičić | 4 | 6 | 7$^7$ | | | | | | | | | | |
| | R Sluiter | 6 | 2 | | | R Sluiter | 6 | 3 | 6$^4$ | | | | | | | | | | |
| | A García | 4 | 0$^r$ | | | | | | | 1 | I Ljubičić | 6$^4$ | 4 | | | | | | |
| | K Vliegen | 4 | 3 | | | | | | | | PH Mathieu | 7$^7$ | 6 | | | | | | |
| | PH Mathieu | 6 | 6 | | | PH Mathieu | 7$^7$ | 6 | | | | | | | | | | | |
| Q | F Serra | 6 | 4 | 6 | Q | F Serra | 6$^5$ | 1 | | | | | | | | | | | |
| 5 | J Mónaco | 4 | 6 | 0 | | | | | | | | | | | | PH Mathieu | 7$^7$ | 6$^4$ | 6$^1$ |
| 3 | J Acasuso | 3 | 6$^2$ | | | | | | | | | | | | Q | J Haehnel | 6$^5$ | 7$^7$ | 7$^7$ |
| Q | J Haehnel | 6 | 7$^7$ | | Q | J Haehnel | 6 | 6 | | | | | | | | | | | |
| Q | G Simon | 2 | 6 | 6$^5$ | Q | M Gicquel | 4 | 2 | | | | | | | | | | | |
| Q | M Gicquel | 6 | 2 | 7$^7$ | | | | | | Q | J Haehnel | 5 | 6 | 7 | | | | | |
| | O Mutis | 6 | 2 | 7$^7$ | | | | | | | A Clément | 7 | 2 | 5 | | | | | |
| WC | N Mahut | 2 | 6 | 6$^1$ | | O Mutis | 6$^4$ | 1 | | | | | | | | | | | |
| | A Clément | 6 | 7$^7$ | | | A Clément | 7$^7$ | 6 | | | | | | | | | | | |
| 8 | G Müller | 4 | 6$^3$ | | | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 6 | J Benneteau | 6 | 6 | | | | | | | | | | | | | | |
| | JM Gambill | 3 | 1 | | 6 | J Benneteau | 4 | 6 | 1 | | | | | | | | |
| | J Morrison | 6 | 6 | | | J Morrison | 6 | 4 | 6 | | | | | | | | |
| | C Rochus | 4 | 3 | | | | | | | | J Morrison | 7 | 6 | | | | |
| | W Arthurs | 6$^6$ | 7$^7$ | 6$^6$ | | | | | | | À Corretja | 5 | 4 | | | | |
| | G Carraz | 7$^8$ | 6$^5$ | 7$^8$ | | G Carraz | 6 | 6$^5$ | 4 | | | | | | | | |
| | À Corretja | 6 | 2 | 7 | | À Corretja | 4 | 7$^7$ | 6 | | | | | | | | |
| 4 | O Rochus | 3 | 6 | 5 | | | | | | | | | | | J Morrison | 1 | 4 |
| 7 | D van Scheppingen | 3 | 6$^5$ | | | | | | | | | | | WC | R Gasquet | 6 | 6 |
| WC | R Gasquet | 6 | 7$^7$ | | WC | R Gasquet | 6 | 4 | 7 | | | | | | | | |
| | T Ascione | 6 | 4 | 6$^3$ | | A Dupuis | 3 | 6 | 5 | | | | | | | | |
| | A Dupuis | 4 | 6 | 7$^7$ | | | | | | WC | R Gasquet | 7 | 6 | | | | |
| | O Patience | 7$^7$ | 0 | 6 | | | | | | WC | G Monfils | 5 | 1 | | | | |
| | P Kohlschreiber | 6$^5$ | 6 | 4 | | O Patience | 4 | 4 | | | | | | | | | |
| WC | G Monfils | 3 | 7$^7$ | | WC | G Monfils | 6 | 6 | | | | | | | | | |
| 2 | X Malisse | 6 | 6$^4$ | r | | | | | | | | | | | | | |