Anja Wildgruber defeated Sonja Krtenova 7-5 6-4 in the W15 Heraklion 7 q64 on clay. The upset overturned the form book — Sonja Krtenova came in leading the head-to-head 1–0. Anja Wildgruber claimed a first win over Sonja Krtenova in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-03-22 | W15 Antalya 12 | Q32 | clay | Sonja Krtenova | 1-6 6-3 10-6 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.