Klara Koukalova defeated Tsvetana Pironkova 6-0 6-3 in the Paris round of 16 on carpet. The upset overturned the form book — Tsvetana Pironkova came in leading the head-to-head 4–1, defending last year's round of 32. Klara Koukalova narrowed the head-to-head to 4–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-02-16 | Dubai | R64 | hard | Tsvetana Pironkova | 6-3 4-6 6-3 |
| 2013-01-07 | Hobart | R16 | hard | Tsvetana Pironkova | 3-6 6-4 6-2 |
| 2009-09-21 | Saint Malo 100K | R32 | clay | Klara Koukalova | 1-6 6-2 6-3 |
| 2008-05-12 | Rome | R64 | clay | Tsvetana Pironkova | 6-4 6-2 |
| 2005-10-08 | Moscow | Q32 | hard | Tsvetana Pironkova | 6-2 6-4 |
Averages over each player's completed matches in the selected window (81 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