Soo Mi Yoo defeated Chin Wei Chan 6-3 6-3 in the Inchon 25K round of 32 on hard. The upset overturned the form book — Chin Wei Chan came in leading the head-to-head 2–0. Soo Mi Yoo claimed a first win over Chin Wei Chan in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-09-25 | Seoul | Q32 | hard | Chin Wei Chan | 6-1 6-3 |
| 2004-07-05 | Seoul 10K | R16 | hard | Chin Wei Chan | 6-2 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.