Norikazu Sugiyama defeated Guilherme Ochiai 7-6 1-6 6-1 in the Japan F10 round of 16 on carpet. The upset overturned the form book — Guilherme Ochiai came in leading the head-to-head 1–0. Norikazu Sugiyama claimed a first win over Guilherme Ochiai in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-07-18 | China F4 | R32 | hard | Guilherme Ochiai | 6-2 4-0 |