Jae Sung An defeated Yuichi Sugita 6-4 6-1 in the Japan F8 round of 32 on hard. Jae Sung An extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-11-08 | Thailand F4 | QF | hard | Yuichi Sugita | 6-2 6-3 |
| 2009-03-30 | Japan F3 | F | hard | Jae Sung An | 5-7 6-4 7-6(5) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.