Tetsuya Chaen defeated Hiroyasu Sato 6-7 6-2 7-5 in the Japan F8 round of 32 on hard. The result followed the form book — Tetsuya Chaen came in leading the head-to-head 1–0. Tetsuya Chaen extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-04-10 | Japan F1 | R16 | hard | Tetsuya Chaen | 6-2 6-4 |