Jae Sung An defeated Hyung Tae Kwon 6-4 3-6 6-4 in the Thailand F1 semi-final on hard. The result followed the form book — Jae Sung An came in leading the head-to-head 3–2. Jae Sung An extended the head-to-head to 4–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-03-24 | Japan F2 | R16 | hard | Jae Sung An | 2-6 6-2 6-4 |
| 2007-04-16 | Japan F5 | F | carpet | Hyung Tae Kwon | 7-5 6-1 |
| 2006-08-07 | Thailand F4 | R16 | hard | Jae Sung An | 6-7(5) 6-1 6-2 |
| 2006-04-17 | Japan F2 | R32 | carpet | Hyung Tae Kwon | 2-6 6-3 6-4 |
| 2005-12-05 | India F7 | R32 | hard | Jae Sung An | 6-1 6-1 |