Ying Ying Duan defeated Chang Liu 6-0 6-1 in the Qianshan 10K round of 16 on hard. The result followed the form book — Ying Ying Duan came in leading the head-to-head 3–0. Ying Ying Duan extended the head-to-head to 4–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-10-08 | Suzhou 100K | R16 | hard | Ying Ying Duan | 6-2 6-0 |
| 2009-06-22 | Qianshan 10K | R32 | hard | Ying Ying Duan | 6-2 6-2 |
| 2009-02-09 | Jiangmen 10K | SF | hard | Ying Ying Duan | 6-1 6-0 |
Averages over each player's completed matches in the selected window (160 vs 79). 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