Olga Govortsova defeated Tsvetana Pironkova 6-2 5-7 6-4 in the Istanbul round of 32 on clay. The upset overturned the form book — Tsvetana Pironkova came in leading the head-to-head 5–0, defending last year's semi-final. Olga Govortsova claimed a first win over Tsvetana Pironkova in six meetings, narrowing the head-to-head to 5–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-04-27 | Prague | R32 | clay | Tsvetana Pironkova | 7-5 6-1 |
| 2009-01-12 | Hobart | R16 | hard | Tsvetana Pironkova | 6-1 6-2 |
| 2008-05-19 | Istanbul | QF | clay | Tsvetana Pironkova | 7-6(4) 7-6(2) |
| 2008-01-14 | Australian Open | R128 | hard | Tsvetana Pironkova | 6-1 6-1 |
| 2007-05-21 | Istanbul | R32 | clay | Tsvetana Pironkova | 6-4 2-6 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 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About