Polona Hercog defeated Tsvetana Pironkova 6-4 6-2 in the Tokyo q16 on hard. The upset overturned the form book — Tsvetana Pironkova came in leading the head-to-head 2–1, defending last year's round of 64. Polona Hercog narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-07-16 | Bastad | QF | clay | Polona Hercog | 3-6 7-5 6-4 |
| 2012-02-13 | Doha | R64 | hard | Tsvetana Pironkova | 6-0 6-4 |
| 2008-05-19 | Istanbul | R32 | clay | Tsvetana Pironkova | 6-4 7-5 |
Averages over each player's completed matches in the selected window (200 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