Zuzana Ondraskova defeated Tsvetana Pironkova 6-4 5-7 6-4 in the Biella 100K round of 32 on clay. The upset overturned the form book — Tsvetana Pironkova came in leading the head-to-head 2–1. Zuzana Ondraskova narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-08-22 | US Open | Q128 | hard | Tsvetana Pironkova | 6-4 6-3 |
| 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 (17 vs 199). 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