Tasuku Iwami defeated Peerakiat Siriluethaiwattana 6-7 7-6 7-6 in the Japan F7 qualifying round on clay. The result followed the form book — Tasuku Iwami came in leading the head-to-head 2–0. Tasuku Iwami extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-08-31 | Thailand F3 | R32 | hard | Tasuku Iwami | 7-6(11) 6-3 |
| 2008-10-13 | Japan F10 | R32 | hard | Tasuku Iwami | 4-6 6-2 6-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.