Natalija Kostic defeated Vanda Lukacs 6-2 6-4 in the Belgrade 10K semi-final on clay. The result followed the form book — Natalija Kostic came in leading the head-to-head 1–0. Natalija Kostic extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-06-27 | Prokuplje 10K | R32 | clay | Natalija Kostic | 6-3 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.