Sung Kyun Kang defeated Oh Hee Kwon 6-3 6-1 in the Korean Rep F4 round of 32 on hard. The upset overturned the form book — Oh Hee Kwon came in leading the head-to-head 1–0. Sung Kyun Kang claimed a first win over Oh Hee Kwon in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-07-25 | China F5 | QF | hard | Oh Hee Kwon | 6-2 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.