# 2004 St. Petersburg Open – Singles

Gustavo Kuerten was the defending champion, but did not participate this year.
Mikhail Youzhny won the title, beating Karol Beck 6–2, 6–2 in the final.

## Seeds

* Marat Safin (quarterfinals)
* Dominik Hrbatý (first round)
* Mardy Fish (second round)
* Mikhail Youzhny (champion)
* Nikolay Davydenko (second round)
* David Ferrer (first round)
* Michaël Llodra (semifinals)
* Igor Andreev (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 |
| 7 | Michaël Llodra | 4 | 6 | 1 | | | | |
| | Karol Beck | 6 | 2 | 6 | | | | |
| | Karol Beck | 6 | 2 | 6 | | Karol Beck | 2 | 2 |
| | | | | | 4 | Mikhail Youzhny | 6 | 6 |
| 4 | Mikhail Youzhny | 3 | 6 | 6 | 4 | Mikhail Youzhny | 6 | 6 |
| | Greg Rusedski | 6 | 3 | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | M Safin | 7$^7$ | 3 | | | | | | | | | | | | | | | |
| Q | A Peya | 6$^5$ | 1$^r$ | | 1 | M Safin | 6 | 6 | | | | | | | | | | |
| | I Labadze | 6 | 1 | 2 | | S Sargsian | 4 | 2 | | | | | | | | | | |
| | S Sargsian | 4 | 6 | 6 | | | | | | 1 | M Safin | 4 | 1 | | | | | |
| Q | M Kohlmann | 4 | 6 | 6 | | | | | | 7 | M Llodra | 6 | 6 | | | | | |
| | G Carraz | 6 | 3 | 4 | Q | M Kohlmann | 6$^3$ | 3 | | | | | | | | | | |
| WC | M Elgin | 2 | 2 | | 7 | M Llodra | 7$^7$ | 6 | | | | | | | | | | |
| 7 | M Llodra | 6 | 6 | | | | | | | | | | | 7 | M Llodra | 4 | 6 | 1 |
| 3 | M Fish | 6 | 6 | | | | | | | | | | | | K Beck | 6 | 2 | 6 |
| | J Hernych | 2 | 4 | | 3 | M Fish | 7$^8$ | 4 | 3 | | | | | | | | | |
| | A Martín | 0 | 1 | | | C Saulnier | 6$^6$ | 6 | 6 | | | | | | | | | |
| | C Saulnier | 6 | 6 | | | | | | | | C Saulnier | 3 | 6$^3$ | | | | | |
| | K Beck | 6 | 6 | | | | | | | | K Beck | 6 | 7$^7$ | | | | | |
| Q | J Vaněk | 3 | 2 | | | K Beck | 6 | 6$^4$ | 6 | | | | | | | | | |
| WC | I Kunitsyn | 4 | 7$^7$ | 4 | 5 | N Davydenko | 1 | 7$^7$ | 4 | | | | | | | | | |
| 5 | N Davydenko | 6 | 6$^5$ | 6 | | | | | | | | | | | | | | |

### 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 | Semifinals |
| 8 | I Andreev | 6 | 1 | 5 | | | | | | | | | | | | | | |
| | G Müller | 4 | 6 | 7 | | G Müller | 4 | 5 | | | | | | | | | | |
| | A Clément | 4 | 6 | 4 | | J Benneteau | 6 | 7 | | | | | | | | | | |
| | J Benneteau | 6 | 1 | 6 | | | | | | | J Benneteau | 0 | 1 | | | | | |
| | R Mello | 6$^7$ | 6$^2$ | | | | | | | 4 | M Youzhny | 6 | 6 | | | | | |
| | M Mirnyi | 7$^9$ | 7$^7$ | | | M Mirnyi | 5 | 6 | 2 | | | | | | | | | |
| Q | A Ram | 6 | 6$^3$ | 6$^4$ | 4 | M Youzhny | 7 | 3 | 6 | | | | | | | | | |
| 4 | M Youzhny | 2 | 7$^7$ | 7$^7$ | | | | | | | | | | 4 | M Youzhny | 3 | 6 | 6 |
| 6 | D Ferrer | 3 | 2 | | | | | | | | | | | | G Rusedski | 6 | 3 | 4 |
| | R Štěpánek | 6 | 6 | | | R Štěpánek | 6$^1$ | 6 | 4 | | | | | | | | | |
| WC | M Rosset | 4 | 3 | | | G Rusedski | 7$^7$ | 4 | 6 | | | | | | | | | |
| | G Rusedski | 6 | 6 | | | | | | | | G Rusedski | 6 | 7$^9$ | | | | | |
| | P-H Mathieu | 4 | 2 | | | | | | | | I Karlović | 4 | 6$^7$ | | | | | |
| | À Corretja | 6 | 6 | | | À Corretja | 6$^3$ | 7$^7$ | 6$^8$ | | | | | | | | | |
| | I Karlović | 7$^7$ | 5 | 6 | | I Karlović | 7$^7$ | 6$^5$ | 7$^{10}$ | | | | | | | | | |
| 2 | D Hrbatý | 6$^5$ | 7 | 4 | | | | | | | | | | | | | | |