Oh Hee Kwon defeated Takahiro Terachi 6-0 3-6 6-0 in the Japan F5 semi-final on carpet. The upset overturned the form book — Takahiro Terachi came in leading the head-to-head 5–3. Oh Hee Kwon narrowed the head-to-head to 5–4.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-10-15 | Japan F10 | QF | hard | Takahiro Terachi | 5-7 6-1 6-4 |
| 2007-08-06 | Indonesia F2 | SF | hard | Oh Hee Kwon | 6-4 6-4 |
| 2004-08-16 | Indonesia F3 | SF | hard | Takahiro Terachi | 7-5 6-2 |
| 2004-05-03 | Korea Rep F1 | R32 | hard | Takahiro Terachi | 6-1 6-1 |
| 2003-05-12 | Korea Rep F3 | R16 | hard | Takahiro Terachi | 6-0 6-4 |
| 1999-05-17 | Japan F4 | SF | hard | Oh Hee Kwon | 7-6 6-4 |
| 1998-09-30 | Japan F3 | F | carpet | Oh Hee Kwon | 6-2 6-4 |
| 1998-06-29 | Japan 1 Masters 1 | F | hard | Takahiro Terachi | 6-7 7-5 6-4 |
Averages over each player's completed matches in the selected window (17 vs 11). 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