Hyun Joon Kim defeated Oh Hee Kwon 5-7 6-0 6-1 in the Japan F5 qualifying round on clay. The upset overturned the form book — Oh Hee Kwon came in leading the head-to-head 2–0. Hyun Joon Kim claimed a first win over Oh Hee Kwon in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-04-28 | Korea Rep F1 | R32 | hard | Oh Hee Kwon | 6-3 6-3 |
| 2007-08-13 | Indonesia F3 | R16 | hard | Oh Hee Kwon | 6-2 6-2 |
Averages over each player's completed matches in the selected window (7 vs 17). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About