Charlotte Van Zonneveld defeated Julia Koller 6-3 6-0 in the W15 Alkmaar 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.
Van Zonneveld C. took it in straight sets.
Charlotte Van Zonneveld beat Julia Koller 6-3 6-0. Umpiry, "Charlotte Van Zonneveld vs Julia Koller — W15 Alkmaar Qualifying Round of 32", https://umpiry.com/match/2026-06-21/koller-vs-zonneveld-w15-alkmaar-q32?utm_source=cite (as of 21 June 2026).