# 2003 JPMorgan Chase Open – Singles

Chanda Rubin was the defending champion, but was forced to withdraw due to a right shoulder tendonitis. However, she recovered in time to compete in the doubles tournament, losing in the first round.
Kim Clijsters won the title by defeating Lindsay Davenport 6–1, 3–6, 6–1 in the final. This victory allowed Clijsters to reach the World No. 1 ranking, ending the 57-week reign of Serena Williams.

## Seeds

All seeds received a bye into the second round.
* Kim Clijsters (champion)
* Lindsay Davenport (final)
* Chanda Rubin (withdrew due to a right shoulder tendonitis)
* Ai Sugiyama (semifinals)
* Jelena Dokic (second round)
* Magdalena Maleeva (quarterfinals)
* Conchita Martínez (third round)
* Amanda Coetzer (quarterfinals)
* Elena Dementieva (second round)
* Meghann Shaughnessy (third round)
* Silvia Farina Elia (third round)
* Eleni Daniilidou (second round)
* Elena Bovina (second round)
* Nadia Petrova (second round)
* Alexandra Stevenson (second round, retired)
* Francesca Schiavone (semifinals)

## 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

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 1 | Kim Clijsters | 6 | 6 | | | | | | | | | | |
| | Svetlana Kuznetsova | 3 | 1 | | | | | | | | | | |
| | Svetlana Kuznetsova | 3 | 1 | | 1 | Kim Clijsters | 7 | 6 | | | | | |
| | | | | | 16 | Francesca Schiavone | 5 | 4 | | | | | |
| 16 | Francesca Schiavone | 6 | 6 | | 16 | Francesca Schiavone | 5 | 4 | | | | | |
| Q | Nicole Pratt | 2 | 3 | | | | | | | | | | |
| Q | Nicole Pratt | 2 | 3 | | | | | | 1 | Kim Clijsters | 6 | 3 | 6 |
| | | | | | | | | | 2 | Lindsay Davenport | 1 | 6 | 1 |
| 6 | Magdalena Maleeva | 2 | 6 | 2 | | | | | | | | | | 2 | Lindsay Davenport | 1 | 6 | 1 |
| 4 | Ai Sugiyama | 6 | 4 | 6 | | | | | | | | | |
| 4 | Ai Sugiyama | 6 | 4 | 6 | 4 | Ai Sugiyama | 2 | 1 | | | | | |
| | | | | | 2 | Lindsay Davenport | 6 | 6 | | | | | |
| 8 | Amanda Coetzer | 2 | 4 | | 2 | Lindsay Davenport | 6 | 6 | | | | | |
| 2 | Lindsay Davenport | 6 | 6 | | | | | | | | | | |

### Top half
#### Section 1

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 1 | K Clijsters | 6 | 6 | | | | | | | | | | |
| | Y-j Cho | 3 | 2 | | | É Loit | 1 | 1 | | | | | | | | | | |
| | É Loit | 6 | 6 | | | | | | | 1 | K Clijsters | 6 | 1 | 6 | | | | |
| | K Srebotnik | 3 | 1 | | | | | | | | M Sharapova | 4 | 6 | 1 | | | | |
| | M Sharapova | 6 | 6 | | | M Sharapova | 6 | 2 | 7 | | | | | | | | | |
| | | | | | 14 | N Petrova | 2 | 6 | 5 | | | | | | | | | |
| | | | | | | | | | | | | | | | 1 | K Clijsters | 6 | 6 |
| | | | | | | | | | | | | | | | | S Kuznetsova | 3 | 1 |
| | | | | | 11 | S Farina Elia | 7 | 2 | 6 | | | | | | | | | |
| | S Asagoe | 6 | 3 | 6 | | S Asagoe | 5 | 6 | 4 | | | | | | | | | |
| Q | E Callens | 3 | 6 | 3 | | | | | | 11 | S Farina Elia | 7$^7$ | 4 | 5 | | | | |
| | S Kuznetsova | 6 | 7$^7$ | | | | | | | | S Kuznetsova | 6$^4$ | 6 | 7 | | | | |
| | M Serna | 3 | 6$^3$ | | | S Kuznetsova | 4 | 7$^7$ | 6 | | | | | | | | | |
| | | | | | 5 | J Dokic | 6 | 6$^5$ | 3 | | | | | | | | | |

#### Section 2

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | LL | A Widjaja | 4 | 6 | 4 | | | | | | | | | |
| | J Husárová | 3 | 7 | 4 | | R Grande | 6 | 1 | 6 | | | | | | | | | |
| | R Grande | 6 | 5 | 6 | | | | | | | R Grande | 3 | 0 | | | | | |
| | T Tanasugarn | 7$^7$ | 6 | | | | | | | 16 | F Schiavone | 6 | 6 | | | | | |
| WC | M Pierce | 6$^2$ | 3 | | | T Tanasugarn | 7 | 3 | 0 | | | | | | | | | |
| | | | | | 16 | F Schiavone | 5 | 6 | 6 | | | | | | | | | |
| | | | | | | | | | | | | | | | 16 | F Schiavone | 6 | 6 |
| | | | | | | | | | | | | | | | Q | N Pratt | 2 | 3 |
| | | | | | 12 | E Daniilidou | 2 | 7$^7$ | 3 | | | | | | | | | |
| | M Sánchez Lorenzo | 6$^1$ | 4 | | Q | N Pratt | 6 | 6$^5$ | 6 | | | | | | | | | |
| Q | N Pratt | 7$^7$ | 6 | | | | | | | Q | N Pratt | 4 | 6 | 6 | | | | |
| | M Bartoli | 3 | 2$^r$ | | | | | | | 7 | C Martínez | 6 | 4 | 4 | | | | |
| Q | T Snyder | 6 | 4 | | Q | T Snyder | 4 | 3 | | | | | | | | | | |
| | | | | | 7 | C Martínez | 6 | 6 | | | | | | | | | | |

### Bottom half
#### Section 3

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 6 | M Maleeva | 6 | 6 | | | | | | | | | | |
| | E Likhovtseva | 6 | 6 | | | E Likhovtseva | 3 | 3 | | | | | | | | | | |
| | A Morigami | 1 | 1 | | | | | | | 6 | M Maleeva | 6 | 6 | | | | | |
| | V Ruano Pascual | 7 | 6 | | | | | | | | V Ruano Pascual | 0 | 3 | | | | | |
| | C Black | 5 | 3 | | | V Ruano Pascual | 6 | 5 | 7 | | | | | | | | | |
| | | | | | 9 | E Dementieva | 3 | 7 | 5 | | | | | | | | | |
| | | | | | | | | | | | | | | 6 | M Maleeva | 2 | 6 | 2 |
| | | | | | | | | | | | | | | 4 | A Sugiyama | 6 | 4 | 6 |
| | | | | | 15 | A Stevenson | 3 | 3$^r$ | | | | | | | | | | |
| WC | V Kutuzova | 6 | 6 | | WC | V Kutuzova | 6 | 3 | | | | | | | | | | |
| | L Krasnoroutskaya | 4 | 4 | | | | | | | WC | V Kutuzova | 2 | 3 | | | | | |
| | V Razzano | 6 | 2 | 3 | | | | | | 4 | A Sugiyama | 6 | 6 | | | | | |
| WC | S Obata | 2 | 6 | 6 | WC | S Obata | 6 | 3 | 3 | | | | | | | | | |
| | | | | | 4 | A Sugiyama | 2 | 6 | 6 | | | | | | | | | |

#### Section 4

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 8 | A Coetzer | 6 | 6 | | | | | | | | | | |
| Q | A Parra Santonja | 6 | 6 | | Q | A Parra Santonja | 1 | 1 | | | | | | | | | | |
| WC | A Haynes | 1 | 4 | | | | | | | 8 | A Coetzer | 7$^7$ | 6 | | | | | |
| | T Pisnik | 1 | 3 | | | | | | | 10 | M Shaughnessy | 6$^4$ | 3 | | | | | |
| | F Zuluaga | 6 | 6 | | | F Zuluaga | 6 | 3 | 6$^4$ | | | | | | | | | |
| | | | | | 10 | M Shaughnessy | 3 | 6 | 7$^7$ | | | | | | | | | |
| | | | | | | | | | | | | | | | 8 | A Coetzer | 2 | 4 |
| | | | | | | | | | | | | | | | 2 | L Davenport | 6 | 6 |
| | | | | | 13 | E Bovina | 6 | 5 | 5 | | | | | | | | | |
| | P Suárez | 6 | 6 | | | P Suárez | 2 | 7 | 7 | | | | | | | | | |
| | A Molik | 4 | 4 | | | | | | | | P Suárez | 6 | 2 | 4 | | | | |
| | B Schett | 4 | 6 | 6 | | | | | | 2 | L Davenport | 4 | 6 | 6 | | | | |
| | A Frazier | 6 | 4 | 4 | | B Schett | 3 | 1 | | | | | | | | | | |
| | | | | | 2 | L Davenport | 6 | 6 | | | | | | | | | | |