Tsung Hua Yang defeated Tetsuya Chaen 2-6 6-2 6-4 in the Japan F11 round of 32 on hard. The upset overturned the form book — Tetsuya Chaen came in leading the head-to-head 2–0. Tsung Hua Yang claimed a first win over Tetsuya Chaen in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-03-17 | Japan F1 | R32 | hard | Tetsuya Chaen | 7-6(3) 6-1 |
| 2006-07-31 | Indonesia F1 | R16 | hard | Tetsuya Chaen | 6-2 6-3 |
Averages over each player's completed matches in the selected window (200 vs 1). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. Small sample — read as indicative. About