Tsung Hua Yang defeated Ti Chen 6-3 6-4 in the M25 Taipei 2 quarter-final on hard. The upset overturned the form book — Ti Chen came in leading the head-to-head 2–1. Tsung Hua Yang narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-07-20 | Korean Rep F6 | SF | hard | Tsung Hua Yang | 0-6 7-5 6-4 |
| 2009-07-13 | Korean Rep F5 | F | hard | Ti Chen | 6-2 6-2 |
| 2009-06-29 | Malaysia F3 | SF | hard | Ti Chen | 6-4 6-7(4) 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.