Peng Sun defeated Xin Yuan Yu 3-6 6-3 6-4 in the China 1 Satellite 2 qualifying round on hard. The upset overturned the form book — Xin Yuan Yu came in leading the head-to-head 5–0. Peng Sun claimed a first win over Xin Yuan Yu in six meetings, narrowing the head-to-head to 5–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-05-04 | China F3 | R32 | hard | Xin Yuan Yu | 0-6 7-6(5) 6-3 |
| 2007-10-08 | China F6 | R32 | hard | Xin Yuan Yu | 6-3 6-3 |
| 2007-06-18 | China F4 | R16 | hard | Xin Yuan Yu | 7-5 3-6 7-5 |
| 2003-11-17 | China 2 3 | QF | hard | Xin Yuan Yu | 7-5 7-5 |
| 2003-07-21 | China 1 1 | QF | hard | Xin Yuan Yu | 6-7(3) 7-5 6-2 |
Averages over each player's completed matches in the selected window (6 vs 3). 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