Lenka Wienerova defeated Nastja Kolar 5-7 6-0 6-1 in the Darmstadt 25K round of 32 on clay. The upset overturned the form book — Nastja Kolar came in leading the head-to-head 1–0. Lenka Wienerova claimed a first win over Nastja Kolar in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-09-05 | Biella 100K | QF | clay | Nastja Kolar | 6-1 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.