Hyung Tae Kwon defeated Jae Sung An 7-5 6-1 in the Japan F5 final on carpet. The upset overturned the form book — Jae Sung An came in leading the head-to-head 4–1. Hyung Tae Kwon narrowed 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 |
| 2007-06-04 | Thailand F1 | SF | hard | Jae Sung An | 6-4 3-6 6-4 |
| 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 |