Charlotte Van Zonneveld defeated Julia Koller 6-2 6-1 in the W50 Oldenzaal 1 qualifying round of 32 on clay. The result followed the form book — Charlotte Van Zonneveld came in leading the head-to-head 1–0. Charlotte Van Zonneveld extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2026-06-21 | W15 Alkmaar | Q32 | clay | Charlotte Van Zonneveld | 6-3 6-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.