Martina Hingis defeated Kim Clijsters 7-5 4-6 6-2 in the Sydney semi-final on hard. The upset overturned the form book — Kim Clijsters came in leading the head-to-head 5–3, defending last year's round of 16. Martina Hingis narrowed the head-to-head to 5–4.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-01-15 | Australian Open | QF | hard | Kim Clijsters | 3-6 6-4 6-3 |
| 2006-07-31 | San Diego | QF | hard | Kim Clijsters | 7-5 6-2 |
| 2006-05-29 | Roland Garros | QF | clay | Kim Clijsters | 7-6(5) 6-1 |
| 2006-01-16 | Australian Open | QF | hard | Kim Clijsters | 6-3 2-6 6-4 |
| 2001-03-08 | Indian Wells | SF | hard | Kim Clijsters | 6-2 2-6 6-1 |
| 2001-01-07 | Sydney | R16 | hard | Martina Hingis | 6-4 6-4 |
| 2000-10-02 | Filderstadt | F | hard | Martina Hingis | 6-0 6-3 |
| 2000-03-20 | Miami | R16 | hard | Martina Hingis | 6-0 6-4 |
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 (84 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About