Hyun Joon Kim defeated Byung Kook Kang 6-3 6-2 in the Korea F1 q16 on hard. The upset overturned the form book — Byung Kook Kang came in leading the head-to-head 1–0. Hyun Joon Kim claimed a first win over Byung Kook Kang in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-05-19 | Korea Rep F4 | R16 | hard | Byung Kook Kang | 3-6 6-2 7-6(3) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.