Klara Koukalova defeated Elena Vesnina 4-6 6-0 6-4 in the New Haven quarter-final on hard. The result followed the form book — Klara Koukalova came in leading the head-to-head 1–0. Klara Koukalova extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-10-11 | Linz | R32 | hard | Klara Koukalova | 7-5 7-5 |
Averages from each player's recent completed matches (20 vs 20). ATP, WTA & Challenger.