# 2003 If Stockholm Open – Singles

Paradorn Srichaphan was the defending champion but lost in the first round to John van Lottum.
Mardy Fish won in the final 7–5, 3–6, 7–6$^{(7–4)}$ against Robin Söderling.

## Seeds

* Paradorn Srichaphan (first round)
* Sjeng Schalken (first round)
* Nicolás Massú (first round)
* Fernando González (second round)
* Mardy Fish (champion)
* Mariano Zabaleta (first round)
* Wayne Ferreira (first round)
* Jarkko Nieminen (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 | Final | Final | Final | Final | Final |
| WC | Robin Söderling | 7$^7$ | 7$^7$ | | | | | |
| | Davide Sanguinetti | 6$^2$ | 6$^5$ | | | | | |
| | Davide Sanguinetti | 6$^2$ | 6$^5$ | WC | Robin Söderling | 5 | 6 | 6$^4$ |
| | | | | 5 | Mardy Fish | 7 | 3 | 7$^7$ |
| 5 | Mardy Fish | 6 | 7 | 5 | Mardy Fish | 7 | 3 | 7$^7$ |
| WC | Thomas Enqvist | 4 | 5 | | | | | |

### 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 |
| 1 | P Srichaphan | 5 | 1 | | | | | | | | | | | | | | |
| | J van Lottum | 7 | 6 | | | J van Lottum | 1 | 4 | | | | | | | | | |
| | A Vinciguerra | 6 | 2 | 1 | | J Björkman | 6 | 6 | | | | | | | | | |
| | J Björkman | 4 | 6 | 6 | | | | | | | J Björkman | 4 | 3 | | | | |
| | W Moodie | 6 | 3 | 3 | | | | | | WC | R Söderling | 6 | 6 | | | | |
| WC | R Söderling | 4 | 6 | 6 | WC | R Söderling | 6 | 6 | | | | | | | | | |
| | J I Chela | 6 | 6 | | | J I Chela | 4 | 3 | | | | | | | | | |
| 7 | W Ferreira | 4 | 2 | | | | | | | | | | | WC | R Söderling | 7$^7$ | 7$^7$ |
| 4 | F González | 3 | 6 | 6 | | | | | | | | | | | D Sanguinetti | 6$^2$ | 6$^5$ |
| | K Beck | 6 | 1 | 1 | 4 | F González | 6 | 4 | 5 | | | | | | | | |
| WC | J Johansson | 7 | 6 | | WC | J Johansson | 4 | 6 | 7 | | | | | | | | |
| Q | J F Andersen | 5 | 3 | | | | | | | WC | J Johansson | 3 | 2 | | | | |
| | D Sanguinetti | 5 | | | | | | | | | D Sanguinetti | 6 | 6 | | | | |
| | J-M Gambill | 4 | r | | | D Sanguinetti | 6 | 2 | 7 | | | | | | | | |
| | G Carraz | 7$^7$ | 5 | 6 | | G Carraz | 3 | 6 | 5 | | | | | | | | |
| 8 | J Nieminen | 6$^5$ | 7 | 2 | | | | | | | | | | | | | |

### 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 | M Fish | 6 | 7$^7$ | | | | | | | | | | | | | | | |
| Q | P Baccanello | 4 | 6$^4$ | | 5 | M Fish | 6 | 6 | | | | | | | | | | |
| | J Melzer | 1 | 1 | | Q | J Benneteau | 4 | 4 | | | | | | | | | | |
| Q | J Benneteau | 6 | 6 | | | | | | | 5 | M Fish | 6 | 6$^7$ | 7$^7$ | | | | |
| | M Ančić | 6 | 6 | | | | | | | | M Ančić | 4 | 7$^9$ | 6$^4$ | | | | |
| | I Karlović | 3 | 2 | | | M Ančić | 6$^7$ | 6 | 7$^7$ | | | | | | | | | |
| | R Sluiter | 6 | 3 | 7 | | R Sluiter | 7$^9$ | 4 | 6$^3$ | | | | | | | | | |
| 3 | N Massú | 3 | 6 | 5 | | | | | | | | | | | 5 | M Fish | 6 | 7 |
| 6 | M Zabaleta | 2 | 4 | | | | | | | | | | | | WC | T Enqvist | 4 | 5 |
| | K Carlsen | | 6 | | | K Carlsen | 7$^7$ | 4 | 4 | | | | | | | | | |
| | H Arazi | 5 | 3 | | WC | T Enqvist | 6$^4$ | 6 | 6 | | | | | | | | | |
| WC | T Enqvist | 7 | 6 | | | | | | | WC | T Enqvist | 6 | 6 | | | | | |
| Q | K Vliegen | 1 | 3 | | | | | | | | R Ginepri | 3 | 4 | | | | | |
| | R Ginepri | 6 | 6 | | | R Ginepri | 6$^2$ | 7$^9$ | 6 | | | | | | | | | |
| | T Dent | 6 | 7 | | | T Dent | 7$^7$ | 6$^7$ | 4 | | | | | | | | | |
| 2 | S Schalken | 3 | 5 | | | | | | | | | | | | | | | |