Takahiro Terachi defeated Norikazu Sugiyama 6-4 6-3 in the Japan F1 round of 32 on carpet. The upset overturned the form book — Norikazu Sugiyama came in leading the head-to-head 1–0. Takahiro Terachi claimed a first win over Norikazu Sugiyama in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-04-23 | Korea Rep F1 | SF | hard | Norikazu Sugiyama | 2-6 7-6(7) 1-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.