Oh Hee Kwon defeated Aleksandar Vlaski 4-6 7-6 6-1 in the China 1 Satellite 3 round of 16 on hard. The upset overturned the form book — Aleksandar Vlaski came in leading the head-to-head 2–1, but Oh Hee Kwon had been the form player, winning 5 of their last 7 on hard. Oh Hee Kwon narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-04-30 | Korea Rep F2 | QF | hard | Aleksandar Vlaski | 6-2 6-4 |
| 2006-03-13 | Korea Rep F1 | QF | hard | Oh Hee Kwon | 6-3 7-6(0) |
| 2004-07-05 | China 1 Satellite 2 | QF | hard | Aleksandar Vlaski | 5-7 6-3 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.