Katerina Avdiyenko defeated Carolin Daniels 6-2 3-6 7-6 in the Horb 10K round of 32 on clay. The result followed the form book — Katerina Avdiyenko came in leading the head-to-head 1–0. Katerina Avdiyenko extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-07-18 | Horb 10K | R16 | clay | Katerina Avdiyenko | 4-6 6-3 6-4 |