# 2003 Porsche Tennis Grand Prix – Singles

Kim Clijsters was the defending champion, and successfully defended her title by defeating compatriot Justine Henin-Hardenne 5–7, 6–4, 6–2 in the final.

## Seeds

The first four seeds received a bye into the second round.
* Kim Clijsters (champion)
* Justine Henin-Hardenne (final)
* Lindsay Davenport (quarterfinals)
* Jennifer Capriati (second round)
* Amélie Mauresmo (quarterfinals)
* Elena Dementieva (quarterfinals)
* Chanda Rubin (second round)
* Anastasia Myskina (second 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 |
| 1 | Kim Clijsters | 7$^7$ | 6 | | | | | |
| WC | Mary Pierce | 6$^2$ | 0 | | | | | |
| WC | Mary Pierce | 6$^2$ | 0 | 1 | Kim Clijsters | 5 | 6 | 6 |
| | | | | 2 | Justine Henin-Hardenne | 7 | 4 | 2 |
| | Elena Bovina | 2 | 4 | 2 | Justine Henin-Hardenne | 7 | 4 | 2 |
| 2 | Justine Henin-Hardenne | 6 | 6 | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| | | | | | 1 | K Clijsters | 6 | 6 | | | | | | | | |
| | D Hantuchová | 6 | 6 | | | D Hantuchová | 1 | 1 | | | | | | | | |
| Q | L Raymond | 3 | 4 | | | | | | 1 | K Clijsters | 6 | 6 | | | | |
| | P Schnyder | 7 | 7 | | | | | | 5 | A Mauresmo | 4 | 3 | | | | |
| Q | M Casanova | 5 | 5 | | | P Schnyder | 2 | 6$^3$ | | | | | | | | |
| | M Shaughnessy | 6$^4$ | 2 | | 5 | A Mauresmo | 6 | 7$^7$ | | | | | | | | |
| 5 | A Mauresmo | 7$^7$ | 6 | | | | | | | | | | 1 | K Clijsters | 7$^7$ | 6 |
| | | | | | | | | | | | | | WC | M Pierce | 6$^2$ | 0 |
| | | | | | 4 | J Capriati | 4 | 2 | | | | | | | | |
| WC | M Pierce | 6 | 6 | | WC | M Pierce | 6 | 6 | | | | | | | | |
| Q | C Black | 2 | 0 | | | | | | WC | M Pierce | 7 | 7$^8$ | | | | |
| | J Dokic | 5 | 0 | | | | | | | M Maleeva | 5 | 6$^6$ | | | | |
| | M Maleeva | 7 | 6 | | | M Maleeva | 6 | 6 | | | | | | | | |
| | V Zvonareva | 6 | 4 | 3 | 7 | C Rubin | 3 | 4 | | | | | | | | |
| 7 | C Rubin | 1 | 6 | 6 | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 8 | A Myskina | 0 | 6 | 4 | | | | | | | | | | | | |
| | A Stevenson | 6 | 1 | 0$^r$ | 8 | A Myskina | 2 | 3 | | | | | | | | |
| Q | F Zuluaga | 2 | 4 | | | E Bovina | 6 | 6 | | | | | | | | |
| | E Bovina | 6 | 6 | | | | | | | E Bovina | 6 | 6 | | | | |
| WC | A Pistolesi | 2 | 1 | | | | | | 3 | L Davenport | 3 | 2 | | | | |
| | A Sugiyama | 6 | 6 | | | A Sugiyama | 2 | 4 | | | | | | | | |
| | | | | | 3 | L Davenport | 6 | 6 | | | | | | | | |
| | | | | | | | | | | | | | | E Bovina | 2 | 4 |
| 6 | E Dementieva | 6 | 6 | | | | | | | | | | 2 | J Henin-Hardenne | 6 | 6 |
| | N Petrova | 3 | 3 | | 6 | E Dementieva | 6 | 2 | | | | | | | | |
| | S Farina Elia | 7$^7$ | 7$^7$ | | | S Farina Elia | 0 | 1$^r$ | | | | | | | | |
| | A Coetzer | 6$^4$ | 6$^4$ | | | | | | 6 | E Dementieva | 5 | 0 | | | | |
| WC | AL Grönefeld | 6$^5$ | 2 | | | | | | 2 | J Henin-Hardenne | 7 | 6 | | | | |
| | C Martínez | 7$^7$ | 6 | | | C Martínez | 0 | 6$^1$ | | | | | | | | |
| | | | | | 2 | J Henin-Hardenne | 6 | 7$^7$ | | | | | | | | |