2003 JPMorgan Chase Open – Singles
| Singles | |
|---|---|
| 2003 JPMorgan Chase Open | |
| Champion | Kim Clijsters |
| Runner-up | Lindsay Davenport |
| Score | 6–1, 3–6, 6–1 |
| Draw | 48 (4WC/4Q/1LL) |
| Seeds | 16 |
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.