Takahiro Terachi defeated Yaoki Ishii 6-0 6-2 in the Japan F3 round of 32 on carpet. Takahiro Terachi extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-03-13 | China F5 | R16 | hard | Takahiro Terachi | 6-4 6-3 |
| 2004-08-30 | Japan F6 | R32 | hard | Yaoki Ishii | 7-6(6) 4-6 3-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.