Yaoki Ishii defeated Kento Takeuchi 2-6 6-2 6-3 in the Japan F8 round of 16 on hard. Yaoki Ishii extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-06-15 | Japan F5 | R16 | carpet | Kento Takeuchi | 7-6(2) 7-5 |
| 2008-10-20 | Japan F11 | R32 | hard | Yaoki Ishii | 6-4 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.