Oh Hee Kwon defeated Michihisa Onoda 6-1 6-3 in the Japan F5 round of 16 on hard. The upset overturned the form book — Michihisa Onoda came in leading the head-to-head 2–1. Oh Hee Kwon narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-04-19 | Japan F2 | R16 | carpet | Michihisa Onoda | 6-4 6-3 |
| 1999-05-17 | Japan F4 | QF | hard | Oh Hee Kwon | 6-3 6-3 |
| 1998-11-25 | Japan F6 | R32 | hard | Michihisa Onoda | 6-3 6-2 |
Averages over each player's completed matches in the selected window (17 vs 4). 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