Kotaro Miyachi defeated Ryo Oki 6-4 4-6 6-2 in the Japan F4 round of 32 on hard. The result followed the form book — Kotaro Miyachi came in leading the head-to-head 1–0. Kotaro Miyachi extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-11-25 | Japan F6 | R16 | hard | Kotaro Miyachi | 6-4 6-0 |