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