Oh Hee Kwon defeated Yuichi Sugita 7-5 6-3 in the Japan F5 round of 32 on hard. The upset overturned the form book — Yuichi Sugita came in leading the head-to-head 2–0, but Oh Hee Kwon had been the form player, winning 5 of their last 7 on hard. Oh Hee Kwon claimed a first win over Yuichi Sugita in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-10-19 | Japan F9 | SF | clay | Yuichi Sugita | 6-7(5) 6-4 6-2 |
| 2008-10-20 | Japan F11 | R32 | hard | Yuichi Sugita | 7-6(0) 6-0 |
Averages over each player's completed matches in the selected window (17 vs 199). 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