Mitsuru Takada defeated Yasufumi Yamamoto 6-0 7-6 in the Japan F6 round of 32 on hard. The upset overturned the form book — Yasufumi Yamamoto came in leading the head-to-head 2–0, but Mitsuru Takada had been the form player, winning 2 of their last 6 on hard. Mitsuru Takada claimed a first win over Yasufumi Yamamoto in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-05-12 | Japan F3 | R16 | hard | Yasufumi Yamamoto | 6-1 4-6 6-3 |
| 1997-11-17 | Japan 2 Masters 1 | R32 | hard | Yasufumi Yamamoto | 6-1 6-3 |