Sachie Umehara defeated Yoriko Yamagishi 6-2 6-4 in the Noda 25K round of 32 on hard. Sachie Umehara extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-11-16 | Haibara 10K | R32 | carpet | Sachie Umehara | 6-1 4-6 6-1 |
| 1998-10-05 | Saga 25K | R32 | grass | Yoriko Yamagishi | 7-6 2-6 6-4 |