Kyung Mi Chang defeated So Jung Kim 6-0 6-2 in the Seoul 25K round of 32 on hard. The upset overturned the form book — So Jung Kim came in leading the head-to-head 2–0. Kyung Mi Chang claimed a first win over So Jung Kim in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-04-05 | Incheon 25K | R32 | hard | So Jung Kim | 6-3 6-4 |
| 2004-06-21 | Inchon 25K | R32 | hard | So Jung Kim | 5-7 6-3 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.