Ying Ying Duan defeated Wen Hsin Hsu 6-3 6-2 in the Beijing 75K round of 32 on hard. The upset overturned the form book — Wen Hsin Hsu came in leading the head-to-head 2–1. Ying Ying Duan narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-01-10 | Pingguo 25K | R32 | hard | Wen Hsin Hsu | 6-3 5-7 7-6(1) |
| 2010-08-23 | Saitama 10K | F | hard | Wen Hsin Hsu | 6-1 1-6 6-3 |
| 2010-08-02 | Beijing 75K | R32 | hard | Ying Ying Duan | 6-3 6-4 |
Averages over each player's completed matches in the selected window (160 vs 2). 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. About