# 2003 Croatian Bol Ladies Open – Singles

Åsa Svensson was the defending champion, but did not compete this year.
Vera Zvonareva won the title by defeating Conchita Martínez Granados 6–1, 6–3 in the final.

## Seeds

The first two seeds received a bye into the second round.
* Patty Schnyder (second round)
* Silvia Farina Elia (second round)
* Vera Zvonareva (champion)
* Nicole Pratt (first round)
* Rita Grande (first round)
* Henrieta Nagyová (second round)
* Flavia Pennetta (first round)
* Petra Mandula (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 |
| | Samantha Reeves | 3 | 4 | | | | | |
| 3 | Vera Zvonareva | 6 | 6 | | | | | |
| 3 | Vera Zvonareva | 6 | 6 | | 3 | Vera Zvonareva | 6 | 6 |
| | | | | | | Conchita Martínez Granados | 1 | 3 |
| | Conchita Martínez Granados | 6 | 1 | 6 | | Conchita Martínez Granados | 1 | 3 |
| | María Sánchez Lorenzo | 0 | 6 | 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 |
| | | | | | 1 | P Schnyder | 6$^4$ | 4 | | | | | | | | | |
| | M Tu | 1 | 3 | | Q | G León García | 7$^7$ | 6 | | | | | | | | | |
| Q | G León García | 6 | 6 | | | | | | | Q | G León García | 6$^3$ | 0$^r$ | | | | |
| | S Reeves | 7$^7$ | 6 | | | | | | | | S Reeves | 7$^7$ | 3 | | | | |
| WC | K Šprem | 6$^4$ | 3 | | | S Reeves | 6 | 4 | 6 | | | | | | | | |
| | P Wartusch | 6 | 7$^7$ | | | P Wartusch | 1 | 6 | 3 | | | | | | | | |
| 7 | F Pennetta | 4 | 6$^4$ | | | | | | | | | | | | S Reeves | 3 | 4 |
| 3 | V Zvonareva | 6 | 6 | | | | | | | | | | | 3 | V Zvonareva | 6 | 6 |
| Q | Petra Dizdar | 0 | 3 | | 3 | V Zvonareva | 2 | 6 | 7$^{10}$ | | | | | | | | |
| Q | AL Grönefeld | 6 | 6 | | Q | AL Grönefeld | 6 | 3 | 6$^8$ | | | | | | | | |
| | E Birnerová | 2 | 1 | | | | | | | 3 | V Zvonareva | 6 | 6 | | | | |
| LL | O Blahotová | 4 | 6 | 3 | | | | | | | Ľ Cervanová | 1 | 1 | | | | |
| | A Rösch | 6 | 3 | 6 | | A Rösch | 7$^7$ | 3 | 1 | | | | | | | | |
| | Ľ Cervanová | 7 | 6 | | | Ľ Cervanová | 6$^2$ | 6 | 6 | | | | | | | | |
| 8 | P Mandula | 5 | 1 | | | | | | | | | | | | | | |

### 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | R Grande | 2 | 6 | 2 | | | | | | | | | | | | |
| | T Garbin | 6 | 4 | 6 | | T Garbin | 5 | 6 | 7 | | | | | | | |
| | C Torrens Valero | 3 | 1 | | | E Gagliardi | 7 | 4 | 5 | | | | | | | |
| | E Gagliardi | 6 | 6 | | | | | | | T Garbin | 5 | 6$^4$ | | | | |
| | J Kostanić | 6 | 5 | 3 | | | | | | C Martínez Granados | 7 | 7$^7$ | | | | |
| | T Poutchek | 1 | 7 | 6 | | T Poutchek | 1 | 4 | | | | | | | | |
| | C Martínez Granados | 6 | 6 | | | C Martínez Granados | 6 | 6 | | | | | | | | |
| 4 | N Pratt | 4 | 3 | | | | | | | | | | C Martínez Granados | 6 | 1 | 6 |
| 6 | H Nagyová | 6 | 6 | | | | | | | | | | M Sánchez Lorenzo | 0 | 6 | 4 |
| WC | D Jurak | 3 | 2 | | 6 | H Nagyová | 6 | 0 | 4 | | | | | | | |
| Q | J Schruff | 3 | 4 | | | M Sánchez Lorenzo | 2 | 6 | 6 | | | | | | | |
| | M Sánchez Lorenzo | 6 | 6 | | | | | | | M Sánchez Lorenzo | 7 | 7$^8$ | | | | |
| | S Talaja | 6 | 6 | | | | | | | S Talaja | 5 | 6$^6$ | | | | |
| | B Rittner | 1 | 1 | | | S Talaja | 1 | 6 | 6 | | | | | | | |
| | | | | | 2 | S Farina Elia | 6 | 3 | 2 | | | | | | | |