Sakiko Shimizu defeated Etsuko Kitazaki 7-5 7-5 in the Hamanako 25K q16 on carpet. The upset overturned the form book — Etsuko Kitazaki came in leading the head-to-head 2–0. Sakiko Shimizu claimed a first win over Etsuko Kitazaki in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-08-03 | Niigata 10K | R16 | carpet | Etsuko Kitazaki | 6-3 7-6(2) |
| 2007-08-27 | Saitama 10K | R32 | hard | Etsuko Kitazaki | 2-6 6-3 6-3 |