Keiko Ishida defeated Satoko Kurioka 5-3 1-4 4-0 2-4 4-1 in the Kofu Open round of 32 on carpet. The upset overturned the form book — Satoko Kurioka came in leading the head-to-head 1–0. Keiko Ishida claimed a first win over Satoko Kurioka in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-09-06 | Ibaraki 4 10K | R32 | hard | Satoko Kurioka | 6-3 7-6 |