Marta Kostyuk def. Zeynep Sonmez 7-5, 6(5)-7(7), 6-3 — US Open 2025 R64

Marta Kostyuk defeated Zeynep Sonmez 7-5, 6(5)-7(7), 6-3 in the R64 of the US Open 2025.

Head-to-head

Zeynep Sonmez and Marta Kostyuk have met 2 times, with Marta Kostyuk leading the head-to-head 2–0.

• Qatar Open (WTA) 2025 R64 — Marta Kostyuk won 6-3, 6-3