Yusuke Watanuki defeated Min Hyoek Cho 6-3 7-5 in the Korea F4 semi-final on hard. The upset overturned the form book — Min Hyoek Cho came in leading the head-to-head 1–0. Yusuke Watanuki claimed a first win over Min Hyoek Cho in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-08-24 | Korea F5 | QF | hard | Min Hyoek Cho | 6-4 5-7 6-3 |
Averages over each player's completed matches in the selected window (47 vs 17). 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