Atsuo Ogawa defeated Hiroyasu Sato 6-2 6-0 in the Japan F4 round of 16 on hard. The result followed the form book — Atsuo Ogawa came in leading the head-to-head 1–0. Atsuo Ogawa extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-05-22 | Japan F4 | R32 | hard | Atsuo Ogawa | 6-1 6-7(3) 6-3 |