Eun Hye Cho defeated Kyung Mi Chang 3-6 6-3 6-4 in the Seogwipo 10K qualifying round on hard. The upset overturned the form book — Kyung Mi Chang came in leading the head-to-head 3–0, but Eun Hye Cho had been the form player, winning 4 of their last 7 on hard. Eun Hye Cho claimed a first win over Kyung Mi Chang in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-06-22 | Gimcheon 10K | R16 | hard | Kyung Mi Chang | 6-1 6-3 |
| 2007-05-28 | Gimhae 10K | SF | clay | Kyung Mi Chang | 6-1 6-3 |
| 2007-05-21 | Gimhae 10K | R16 | clay | Kyung Mi Chang | 6-2 6-2 |