Yoshiko Sasano defeated Ka Po Tong 6-2 6-4 in the Kugayama 4 10K round of 32 on hard. The result followed the form book — Yoshiko Sasano came in leading the head-to-head 1–0, defending last year's round of 16. Yoshiko Sasano extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-09-06 | Ibaraki 4 10K | R16 | hard | Yoshiko Sasano | 6-4 7-6 |