Ksenia Kirillova defeated Tanja Ostertag 6-4 6-2 in the Antalya-Belek 10K round of 32 on hard. The upset overturned the form book — Tanja Ostertag came in leading the head-to-head 1–0, but Ksenia Kirillova had been the form player, winning 4 of their last 5 on hard. Ksenia Kirillova claimed a first win over Tanja Ostertag in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-06-14 | Lenzerheide 10K | R16 | clay | Tanja Ostertag | 6-4 7-6(5) |