Tasuku Iwami defeated Hiroyasu Sato 6-4 7-5 in the Japan 2 Masters 1 round of 32 on hard. The result followed the form book — Tasuku Iwami came in leading the head-to-head 3–0. Tasuku Iwami extended the head-to-head to 4–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-09-08 | Japan F8 | R16 | hard | Tasuku Iwami | 6-2 6-3 |
| 1998-06-29 | Japan 1 Masters 4 | QF | hard | Tasuku Iwami | 7-5 6-0 |
| 1997-11-17 | Japan 2 Masters 3 | R32 | hard | Tasuku Iwami | 6-3 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.