Shizu Katsumi defeated Ji Young Kim 7-6 6-0 in the Tokyo 10K round of 16 on hard. The upset overturned the form book — Ji Young Kim came in leading the head-to-head 1–0. Shizu Katsumi claimed a first win over Ji Young Kim in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-05-22 | Seogwipo 10K | R32 | hard | Ji Young Kim | 6-3 6-3 |