Nikola Vajdova defeated Janina Toljan 6-4 6-3 in the Prague 10K semi-final on clay. The result followed the form book — Nikola Vajdova came in leading the head-to-head 3–1. Nikola Vajdova extended the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-07-20 | Bad Waltersdorf $10K | R32 | clay | Nikola Vajdova | 6-4 6-0 |
| 2014-01-27 | Sharm El Sheikh 10K | R32 | hard | Janina Toljan | 6-4 4-6 6-4 |
| 2010-05-24 | Velenje 10K | R32 | clay | Nikola Vajdova | 6-2 4-6 6-2 |
| 2008-08-04 | Vienna 10K | R32 | clay | Nikola Vajdova | 6-3 7-6(2) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.