Yong Il Yoon defeated Akira Matsushita 6-3 6-1 in the Japan Masters 3 round of 32 on hard. The result followed the form book — Yong Il Yoon came in leading the head-to-head 1–0. Yong Il Yoon extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-06-01 | Korea F2 | QF | hard | Yong Il Yoon | 7-6 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.