Tsvetana Pironkova defeated Petra Kvitova 6-4 6-3 in the Sydney semi-final on hard. The upset overturned the form book — Petra Kvitova came in leading the head-to-head 2–0, defending last year's round of 32. Tsvetana Pironkova claimed a first win over Petra Kvitova in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-01-12 | Sydney | SF | hard | Petra Kvitova | 7-5 6-1 |
| 2011-06-20 | Wimbledon | QF | grass | Petra Kvitova | 6-3 6-7(5) 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 (172 vs 199). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About