Kentaro Masuda defeated Norikazu Sugiyama 6-3 7-6 in the Japan 2 Masters 4 round of 16 on hard. The result followed the form book — Kentaro Masuda came in leading the head-to-head 2–1. Kentaro Masuda extended the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-05-31 | Japan F5 | QF | hard | Norikazu Sugiyama | 7-5 7-5 |
| 2004-04-12 | Japan F1 | SF | carpet | Kentaro Masuda | 6-2 6-2 |
| 1997-07-07 | Japan 1 Masters 1 | R32 | hard | Kentaro Masuda | 6-2 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.