Melanie Klaffner defeated Nastja Kolar 6-1 6-1 in the Zlin 25K round of 16 on clay. The upset overturned the form book — Nastja Kolar came in leading the head-to-head 2–0. Melanie Klaffner claimed a first win over Nastja Kolar in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-04-20 | W15 Cairo 1 | SF | clay | Nastja Kolar | 6-4 7-6(4) |
| 2013-09-02 | Mestre 50K | R32 | clay | Nastja Kolar | 7-5 6-4 |
Averages over each player's completed matches in the selected window (140 vs 112). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About