Dayeon Back defeated Yeon Woo Ku 0-6 6-3 6-3 in the W35 Monastir 3 semi-final on hard. The upset overturned the form book — Yeon Woo Ku came in ranked #188, leading the head-to-head 1–0. Dayeon Back claimed a first win over Yeon Woo Ku in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-06-21 | W35 Taipei 1 | SF | hard | Yeon Woo Ku | 7-6(4) 6-1 |
Averages over each player's completed matches in the selected window (93 vs 90). 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