Yeon Woo Ku defeated Martyna Kubka 3-6 6-4 6-1 in the Figueira Da Foz quarter-final on hard. The upset overturned the form book — Martyna Kubka came in leading the head-to-head 1–0. Yeon Woo Ku claimed a first win over Martyna Kubka in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-07-10 | W35 Monastir 1 | R16 | hard | Martyna Kubka | 6-0 6-4 |
Averages over each player's completed matches in the selected window (41 vs 24). 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