Takahiro Terachi defeated Sung Kyun Kang 6-2 6-3 in the Korea Rep F3 qualifying round on hard. The upset overturned the form book — Sung Kyun Kang came in leading the head-to-head 1–0, but Takahiro Terachi had been the form player, winning 2 of their last 6 on hard. Takahiro Terachi 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 |
|---|---|---|---|---|---|
| 2008-05-19 | Korea Rep F4 | R16 | hard | Sung Kyun Kang | 6-1 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.