Takahiro Terachi defeated Kentaro Masuda 7-5 4-6 6-3 in the Japan F1 semi-final on carpet. The result followed the form book — Takahiro Terachi came in leading the head-to-head 2–1. Takahiro Terachi extended the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-05-31 | Japan F5 | R32 | hard | Kentaro Masuda | 6-1 7-5 |
| 2003-04-07 | Japan F1 | F | carpet | Takahiro Terachi | 6-2 6-2 |
| 2000-03-27 | Japan F3 | F | clay | Takahiro Terachi | 7-6(8) 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.