Diana Sumova defeated Adriana Sosnovschi 7-6 3-6 6-3 in the St Poelten $10K round of 16 on clay. The result followed the form book — Diana Sumova came in leading the head-to-head 1–0. Diana Sumova extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-10-14 | Burgas 10K | R16 | clay | Diana Sumova | 6-0 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.