Yasufumi Yamamoto defeated Wei Ju Chen 6-3 7-6 in the Japan F4 round of 32 on carpet. The result followed the form book — Yasufumi Yamamoto came in leading the head-to-head 2–1. Yasufumi Yamamoto extended the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-09-30 | Japan F3 | R16 | carpet | Yasufumi Yamamoto | 6-3 7-6 |
| 1997-11-17 | Japan 2 Masters 2 | QF | hard | Yasufumi Yamamoto | 5-7 6-4 6-1 |
| 1995-11-06 | Japan Masters 3 | R32 | hard | Wei Ju Chen | 6-4 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.