Ka Po Tong defeated Yoshiko Sasano 7-6 2-6 6-3 in the Inchon 10K round of 16 on clay. The upset overturned the form book — Yoshiko Sasano came in leading the head-to-head 2–0. Ka Po Tong claimed a first win over Yoshiko Sasano in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-09-06 | Ibaraki 4 10K | R16 | hard | Yoshiko Sasano | 6-4 7-6 |
| 1998-09-07 | Kugayama 4 10K | R32 | hard | Yoshiko Sasano | 6-2 6-4 |