Tasuku Iwami defeated Tatsuma Ito 7-6 6-4 in the Japan F5 round of 32 on carpet. The upset overturned the form book — Tatsuma Ito came in leading the head-to-head 2–1. Tasuku Iwami narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-03-17 | Japan F1 | SF | hard | Tatsuma Ito | 6-3 3-6 6-4 |
| 2006-10-16 | Japan F11 | QF | hard | Tasuku Iwami | 6-2 7-6(3) |
| 2006-06-19 | Japan F7 | R32 | carpet | Tatsuma Ito | 4-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.