Nicole Vaidisova defeated Ana Ivanovic 6-4 6-2 in the Sydney quarter-final on hard. The upset overturned the form book — Ana Ivanovic came in leading the head-to-head 4–0, defending last year's quarter-final. Nicole Vaidisova claimed a first win over Ana Ivanovic in five meetings, narrowing the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-03-02 | Monterrey | R32 | hard | Ana Ivanovic | 6-1 7-6(4) |
| 2008-02-25 | Dubai | R16 | hard | Ana Ivanovic | 6-4 6-0 |
| 2007-06-25 | Wimbledon | QF | grass | Ana Ivanovic | 4-6 6-2 7-5 |
| 2005-03-23 | Miami | R32 | hard | Ana Ivanovic | 6-2 7-6(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 (101 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About