Oh Hee Kwon defeated Ryuso Tsujino 6-4 6-3 in the Japan 1 Masters 1 round of 16 on hard. The result followed the form book — Oh Hee Kwon came in leading the head-to-head 2–0. Oh Hee Kwon extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-03-12 | Japan F1 | R32 | carpet | Oh Hee Kwon | 6-3 6-3 |
| 1998-06-29 | Japan 1 Masters 3 | QF | hard | Oh Hee Kwon | 4-6 7-6 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.