Toshiharu Kato defeated Ashutosh Singh 6-2 4-6 6-2 in the Indonesia 1 4 round of 16 on hard. The result followed the form book — Toshiharu Kato came in leading the head-to-head 1–0. Toshiharu Kato extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-05-08 | Indonesia 1 1 | R32 | hard | Toshiharu Kato | 7-6(2) 6-3 |