Oh Hee Kwon defeated Sung Kyun Kang 6-2 6-3 in the China F5 qualifying round on hard. The upset overturned the form book — Sung Kyun Kang came in leading the head-to-head 1–0, but Oh Hee Kwon had been the form player, winning 4 of their last 6 on hard. Oh Hee Kwon claimed a first win over Sung Kyun Kang in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-04-27 | Korean Rep F4 | R32 | hard | Sung Kyun Kang | 6-3 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.