Seiko Okamoto defeated Keiko Taguchi 6-0 6-3 in the Haibara 25K round of 16 on carpet. Seiko Okamoto extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-11-20 | Kofu Open | F | carpet | Seiko Okamoto | 4-1 1-4 4-1 5-3 |
| 1999-06-21 | Easton 10K | R32 | hard | Keiko Taguchi | 6-4 6-2 |