Keiko Ishida defeated Keiko Nagatomi 6-0 2-6 6-0 in the Haibara 10K semi-final on carpet. The upset overturned the form book — Keiko Nagatomi came in leading the head-to-head 2–0. Keiko Ishida claimed a first win over Keiko Nagatomi in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-03-16 | Noda 25K | QF | hard | Keiko Nagatomi | 6-3 7-6 |
| 1997-11-03 | Beijing 25K | R32 | hard | Keiko Nagatomi | 7-5 6-3 |