Kotaro Miyachi defeated Oh Hee Kwon 6-2 6-1 in the Japan 1 Masters 4 round of 16 on hard. The upset overturned the form book — Oh Hee Kwon came in leading the head-to-head 3–0. Kotaro Miyachi claimed a first win over Oh Hee Kwon in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-03-18 | Japan F2 | R32 | carpet | Oh Hee Kwon | 6-3 6-2 |
| 1999-05-12 | Japan F3 | QF | hard | Oh Hee Kwon | 7-6 7-6 |
| 1998-11-18 | Japan F5 | QF | hard | Oh Hee Kwon | 2-6 7-5 1-0 |
Averages over each player's completed matches in the selected window (2 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. Small sample — read as indicative. About