Jae Sung An defeated Arata Onozawa 7-5 6-4 in the Korean Rep F5 round of 32 on hard. Jae Sung An extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-04-11 | Thailand F3 | R16 | hard | Jae Sung An | 6-3 6-2 |
| 2011-04-04 | Thailand F2 | R32 | hard | Arata Onozawa | 6-3 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.