Yaoki Ishii defeated Bumpei Sato 7-5 7-5 in the Japan F6 round of 32 on clay. The result followed the form book — Yaoki Ishii came in leading the head-to-head 1–0. Yaoki Ishii extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-06-15 | Japan F5 | R32 | carpet | Yaoki Ishii | 6-4 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.