Karla Popovic defeated Katharina Negrin 7-6 6-2 in the Osijek 10K round of 32 on clay. The result followed the form book — Karla Popovic came in leading the head-to-head 1–0. Karla Popovic extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-07-22 | Bad Waltersdorf 10K | R32 | clay | Karla Popovic | 6-3 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.