Jae Sung An defeated Tsung Hua Yang 6-2 6-1 in the Chinese Taipei F2 semi-final on hard. The upset overturned the form book — Tsung Hua Yang came in leading the head-to-head 3–0, but Jae Sung An had been the form player, winning 2 of their last 6 on hard. Jae Sung An claimed a first win over Tsung Hua Yang in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-05-23 | Korea F2 | QF | hard | Tsung Hua Yang | 6-3 7-5 |
| 2010-06-28 | Malaysia F2 | R32 | hard | Tsung Hua Yang | 7-5 3-0 |
| 2008-05-05 | Korea Rep F2 | R32 | hard | Tsung Hua Yang | 6-3 3-6 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.