Conchita Martinez defeated Kim Clijsters 6-3 6-4 in the San Diego round of 32 on hard. The upset overturned the form book — Kim Clijsters came in leading the head-to-head 5–0, but Conchita Martinez had been the form player, winning 5 of their last 10 on hard. Conchita Martinez claimed a first win over Kim Clijsters in six meetings, narrowing the head-to-head to 5–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-06-13 | Eastbourne | R16 | grass | Kim Clijsters | 6-2 6-2 |
| 2005-03-09 | Indian Wells | QF | hard | Kim Clijsters | 6-1 3-6 6-2 |
| 2003-05-26 | Roland Garros | QF | clay | Kim Clijsters | 6-2 6-1 |
| 2003-03-05 | Indian Wells | SF | hard | Kim Clijsters | 6-3 6-2 |
| 2000-10-02 | Filderstadt | QF | hard | Kim Clijsters | 7-5 7-5 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (18 vs 200). ATP, WTA & Challenger.