Yan Ze Xie defeated Ying Ying Duan 6-1 6-1 in the Chengdu 25K round of 16 on hard. The upset overturned the form book — Ying Ying Duan came in leading the head-to-head 1–0. Yan Ze Xie claimed a first win over Ying Ying Duan in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-02-09 | Jiangmen 10K | F | hard | Ying Ying Duan | 6-2 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.