# 2004 Grand Prix de Tennis de Lyon – Singles

Rainer Schüttler was the defending champion, but lost in the first round this year.
Robin Söderling won the tournament, beating Xavier Malisse 6–2, 3–6, 6–4 in the final.

## Seeds

* Nicolás Massú (first round)
* Rainer Schüttler (first round)
* Juan Carlos Ferrero (second round)
* Joachim Johansson (quarterfinals)
* Tommy Robredo (first round)
* Dominik Hrbatý (first round)
* Vincent Spadea (semifinals)
* Mario Ančić (first round, retired due to a shoulder injury)

## 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 |
| | Xavier Malisse | 6 | 6 | | | | |
| | David Ferrer | 4 | 2 | | | | |
| | David Ferrer | 4 | 2 | Xavier Malisse | 2 | 6 | 4 |
| | | | | Robin Söderling | 6 | 3 | 6 |
| | Robin Söderling | 6 | 6 | Robin Söderling | 6 | 3 | 6 |
| 7 | Vincent Spadea | 2 | 4 | | | | |

### 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 | Semifinals | Semifinals | Semifinals |
| 1 | N Massú | 3 | 4 | | | | | | | | | | | | |
| | A Calleri | 6 | 6 | | | A Calleri | 3 | 7$^7$ | 6$^4$ | | | | | | |
| | L Horna | 4 | 6$^1$ | | | M Youzhny | 6 | 6$^2$ | 7$^7$ | | | | | | |
| | M Youzhny | 6 | 7$^7$ | | | | | | | M Youzhny | 3 | 4 | | | |
| Q | R Štěpánek | 4 | 7 | 6 | | | | | | X Malisse | 6 | 6 | | | |
| WC | P-H Mathieu | 6 | 5 | 2 | Q | R Štěpánek | 6 | 6$^4$ | 0 | | | | | | |
| | X Malisse | 6 | 7$^7$ | | | X Malisse | 4 | 7$^7$ | 6 | | | | | | |
| 6 | D Hrbatý | 4 | 6$^4$ | | | | | | | | | | X Malisse | 6 | 6 |
| 3 | JC Ferrero | 6 | 7$^7$ | | | | | | | | | | D Ferrer | 4 | 2 |
| | S Sargsian | 3 | 6$^4$ | | 3 | JC Ferrero | 6 | 5 | 3 | | | | | | |
| | D Ferrer | 6 | 6 | | | D Ferrer | 3 | 7 | 6 | | | | | | |
| Q | R Sluiter | 3 | 4 | | | | | | | D Ferrer | 6 | 6 | | | |
| | A Costa | 7$^7$ | 6$^6$ | 4 | | | | | | J Björkman | 2 | 4 | | | |
| | J Björkman | 6$^5$ | 7$^8$ | 6 | | J Björkman | 6$^3$ | 7$^7$ | 6 | | | | | | |
| Q | M Mirnyi | 6 | 3 | | Q | M Mirnyi | 7$^7$ | 6$^5$ | 4 | | | | | | |
| 8 | M Ančić | 3 | 1$^r$ | | | | | | | | | | | | |

### 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | T Robredo | 1 | 4 | | | | | | | | | | | | | | | |
| | R Söderling | 6 | 6 | | | R Söderling | 4 | 6 | 6 | | | | | | | | | |
| | F López | 6 | 6$^2$ | 6 | | F López | 6 | 3 | 3 | | | | | | | | | |
| | N Davydenko | 3 | 7$^7$ | 3 | | | | | | | R Söderling | 6 | 6 | | | | | |
| | R Nadal | 3 | 0 | | | | | | | 4 | J Johansson | 3 | 4 | | | | | |
| Q | J Benneteau | 6 | 6 | | Q | J Benneteau | 3 | 4 | | | | | | | | | | |
| SE | J Mónaco | 4 | 3 | | 4 | J Johansson | 6 | 6 | | | | | | | | | | |
| 4 | J Johansson | 6 | 6 | | | | | | | | | | | | | R Söderling | 6 | 6 |
| 7 | V Spadea | 6 | 6 | | | | | | | | | | | | 7 | V Spadea | 2 | 4 |
| | R Ginepri | 4 | 3 | | 7 | V Spadea | 6 | 7$^7$ | | | | | | | | | | |
| | I Ljubičić | 6 | 7$^7$ | | | I Ljubičić | 4 | 6$^4$ | | | | | | | | | | |
| WC | A Clément | 4 | 6$^1$ | | | | | | | 7 | V Spadea | 1 | 6 | 7$^7$ | | | | |
| | J Melzer | 7$^7$ | 6 | | | | | | | | J Melzer | 6 | 1 | 6$^2$ | | | | |
| WC | M Llodra | 6$^2$ | 4 | | | J Melzer | 4 | 7$^7$ | 6 | | | | | | | | | |
| | H Arazi | 6 | 1 | 6 | | H Arazi | 6 | 6$^4$ | 1 | | | | | | | | | |
| 2 | R Schüttler | 4 | 6 | 3 | | | | | | | | | | | | | | |