Klara Koukalova defeated Mariya Koryttseva 6-2 7-5 in the Vina Del Mar semi-final on clay. The upset overturned the form book — Mariya Koryttseva came in leading the head-to-head 3–1. Klara Koukalova narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-10-18 | Moscow | R32 | hard | Mariya Koryttseva | 3-6 6-3 7-5 |
| 2010-02-15 | Bogota | R16 | clay | Klara Koukalova | 1-6 6-3 6-4 |
| 2009-08-29 | US Open | Q32 | hard | Mariya Koryttseva | 6-0 6-4 |
| 2007-05-24 | Roland Garros | Q64 | clay | Mariya Koryttseva | 6-1 2-6 6-4 |
Averages over each player's completed matches in the selected window (81 vs 62). 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