# 2003 J&S Cup – Singles

Elena Bovina was the defending champion, but chose not to participate that year. Amélie Mauresmo won in the final against Venus Williams 6-7$^{(6–8)}$, 6–0, 3–0, retired due to straining an abdominal muscle.

## Seeds

* Venus Williams (final)
* Amélie Mauresmo (champion)
* Daniela Hantuchová (second round)
* Jelena Dokić (semifinals)
* Magdalena Maleeva (first round)
* Eleni Daniilidou (second round)
* Anna Pistolesi (quarterfinals)
* Conchita Martínez (withdrew)
* Elena Likhovtseva (withdrew)
* Tatiana Panova (first round)

## Main 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 | Venus Williams | 6 | 7 | | | | | |
| | Denisa Chládková | 3 | 6$^5$ | | | | | |
| | Denisa Chládková | 3 | 6$^5$ | 1 | Venus Williams | 7 | 0 | 0$^r$ |
| | | | | 2 | Amélie Mauresmo | 6$^6$ | 6 | 3 |
| 4 | Jelena Dokić | 5 | 2 | 2 | Amélie Mauresmo | 6$^6$ | 6 | 3 |
| 2 | Amélie Mauresmo | 7 | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| | | | | | 1 | V Williams | 6 | 6 | | | | | | | | | |
| Q | M Suchá | 4 | 3 | | Q | Z Ondrášková | 2 | 3 | | | | | | | | | |
| Q | Z Ondrášková | 6 | 6 | | | | | | 1 | V Williams | 2 | 6 | 6 | | | | |
| | K Srebotnik | 2 | 3 | | | | | | | F Schiavone | 6 | 3 | 3 | | | | |
| | F Schiavone | 6 | 6 | | | F Schiavone | 6 | 6 | | | | | | | | | |
| LL | K Marosi | 4 | 1 | | 5 | E Daniilidou | 1 | 1 | | | | | | | | | |
| 6 | E Daniilidou | 6 | 6 | | | | | | | | | | | 1 | V Williams | 6 | 7 |
| | | | | | | | | | | | | | | | D Chládková | 3 | 6$^5$ |
| | | | | | 3 | D Hantuchová | 2 | 4 | | | | | | | | | |
| | F Zuluaga | 6 | 6 | | | F Zuluaga | 6 | 6 | | | | | | | | | |
| WC | J Sakowicz | 3 | 2 | | | | | | | F Zuluaga | 5 | 5 | | | | | |
| | I Majoli | 1 | 4 | | | | | | | D Chládková | 7 | 7 | | | | | |
| | D Chládková | 6 | 6 | | | D Chládková | 6 | 7 | | | | | | | | | |
| Q | A Parra | 6$^0$ | 6 | 6 | Q | A Parra | 1 | 5 | | | | | | | | | |
| 5 | M Maleeva | 7 | 4 | 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 | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 10 | T Panova | 2 | 1 | | | | | | | | | | | | | | | |
| Q | S Kleinová | 6 | 6 | | Q | S Kleinová | 6 | 1 | 2 | | | | | | | | | |
| | M Serna | 6 | 3 | 7 | | M Serna | 4 | 6 | 6 | | | | | | | | | |
| | I Benešová | 2 | 6 | 5 | | | | | | | M Serna | 5 | 2 | | | | | |
| | M Casanova | 4 | 6 | 6 | | | | | | 4 | J Dokić | 7 | 6 | | | | | |
| | R Neffa-de los Ríos | 6 | 4 | 3 | | M Casanova | 5 | 6$^{12}$ | | | | | | | | | | |
| | | | | | 4 | J Dokić | 7 | 7 | | | | | | | | | | |
| | | | | | | | | | | | | | | | 4 | J Dokić | 5 | 2 |
| 7 | A Pistolesi | 6 | 6 | | | | | | | | | | | | 2 | A Mauresmo | 7 | 6 |
| | B Schett | 4 | 2 | | 7 | A Pistolesi | 6 | 7 | | | | | | | | | | |
| | J Craybas | 7 | 6 | | | J Craybas | 0 | 5 | | | | | | | | | | |
| | A Barna | 6$^4$ | 4 | | | | | | | 7 | A Pistolesi | 6 | 4 | 3 | | | | |
| WC | M Domachowska | 3 | 6 | 1 | | | | | | 2 | A Mauresmo | 3 | 6 | 6 | | | | |
| LL | R Voráčová | 6 | 3 | 6 | LL | R Voráčová | 6 | 2 | 0 | | | | | | | | | |
| | | | | | 2 | A Mauresmo | 2 | 6 | 6 | | | | | | | | | |