Flavia Pennetta defeated Nicole Vaidisova 6-4 6-3 in the Acapulco quarter-final on hard. The upset overturned the form book — Nicole Vaidisova came in leading the head-to-head 3–0. Flavia Pennetta claimed a first win over Nicole Vaidisova in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-10-22 | Linz | R32 | hard | Nicole Vaidisova | 4-6 6-3 7-6(4) |
| 2007-08-27 | US Open | R64 | hard | Nicole Vaidisova | 6-2 7-6(0) |
| 2006-01-16 | Australian Open | R32 | hard | Nicole Vaidisova | 6-4 6-2 |
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 (200 vs 161). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About