Tsvetana Pironkova defeated Zuzana Ondraskova 6-4 6-3 in the US Open q128 on hard. The upset overturned the form book — Zuzana Ondraskova came in leading the head-to-head 2–1, defending last year's round of 128. Tsvetana Pironkova narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-09-07 | Biella 100K | R32 | clay | Zuzana Ondraskova | 6-4 5-7 6-4 |
| 2005-06-06 | Zagreb 75K | F | clay | Zuzana Ondraskova | 4-6 6-4 6-3 |
| 2005-01-24 | Belfort 25K | R16 | hard | Tsvetana Pironkova | 6-2 7-5 |
Averages over each player's completed matches in the selected window (199 vs 25). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About