Yi Chen defeated Hyun Hui Hong 7-6 6-4 in the Seoul 25K round of 32 on hard. The upset overturned the form book — Hyun Hui Hong came in leading the head-to-head 1–0. Yi Chen claimed a first win over Hyun Hui Hong in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-05-17 | Sunchang 10K | R16 | hard | Hyun Hui Hong | 3-6 7-5 6-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.