Norikazu Sugiyama defeated Kentaro Masuda 7-5 7-5 in the Japan F5 qualifying round on hard. The upset overturned the form book — Kentaro Masuda came in leading the head-to-head 3–0, but Norikazu Sugiyama had been the form player, winning 4 of their last 8 on hard. Norikazu Sugiyama claimed a first win over Kentaro Masuda in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-04-12 | Japan F1 | SF | carpet | Kentaro Masuda | 6-2 6-2 |
| 1997-11-17 | Japan 2 Masters 4 | R16 | hard | Kentaro Masuda | 6-3 7-6 |
| 1997-07-07 | Japan 1 Masters 1 | R32 | hard | Kentaro Masuda | 6-2 6-3 |