Diana Buzean defeated Ilona Kremen 7-5 6-7 7-5 in the Antalya 10K round of 32 on clay. The upset overturned the form book — Ilona Kremen came in leading the head-to-head 1–0. Diana Buzean claimed a first win over Ilona Kremen in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-09-12 | Rotterdam 25K | R32 | clay | Ilona Kremen | 6-4 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.