Ying Ying Duan defeated Kai Lin Zhang 6-3 6-1 in the Nanjing 10K semi-final on hard. The result followed the form book — Ying Ying Duan came in leading the head-to-head 3–2. Ying Ying Duan extended the head-to-head to 4–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-10-19 | Suzhou $50K | F | hard | Kai Lin Zhang | 1-6 6-3 6-4 |
| 2015-03-23 | Quanzhou $50K | R16 | hard | Kai Lin Zhang | 6-4 6-2 |
| 2013-04-22 | Wenshan 50K | QF | hard | Ying Ying Duan | 6-3 6-3 |
| 2012-05-28 | Gimcheon 25K | R16 | hard | Ying Ying Duan | 6-2 6-4 |
| 2012-01-02 | Quanzhou 50K | R32 | hard | Ying Ying Duan | 6-1 6-2 |
Averages over each player's completed matches in the selected window (160 vs 78). 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