Tetsuya Chaen defeated Yasufumi Yamamoto 6-1 6-2 in the Indonesia F3 round of 32 on hard. The result followed the form book — Tetsuya Chaen came in leading the head-to-head 2–1. Tetsuya Chaen extended the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-06-07 | Japan 1 Masters 4 | R32 | hard | Yasufumi Yamamoto | 6-4 6-2 |
| 1997-11-17 | Japan 2 Masters 2 | F | hard | Tetsuya Chaen | 6-2 3-6 6-2 |
| 1997-08-25 | Indonesia Masters 1 | R32 | hard | Tetsuya Chaen | 6-4 4-6 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.