Keiko Taguchi defeated Ryoko Takemura 6-1 3-6 7-5 in the Kugayama 4 10K round of 16 on hard. The upset overturned the form book — Ryoko Takemura came in leading the head-to-head 2–0, but Keiko Taguchi had been the form player, winning 2 of their last 4 on hard. Keiko Taguchi claimed a first win over Ryoko Takemura in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-08-30 | Saitama 10K | QF | hard | Ryoko Takemura | 7-6(3) 3-6 7-5 |
| 2003-04-14 | Yamaguchi 10K | SF | clay | Ryoko Takemura | 6-1 6-2 |