Shuai Peng defeated Christina Mchale 6-4 6-4 in the US Open q64 on hard. The upset overturned the form book — Christina Mchale came in leading the head-to-head 4–1, defending last year's round of 128. Shuai Peng narrowed the head-to-head to 4–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-05-06 | Madrid | R64 | clay | Christina Mchale | 7-5 5-7 6-1 |
| 2012-02-13 | Doha | R32 | hard | Christina Mchale | 5-7 6-3 6-2 |
| 2011-09-26 | Tokyo | R32 | hard | Shuai Peng | 6-0 6-3 |
| 2011-05-09 | Rome | R64 | clay | Christina Mchale | 6-3 2-6 7-6 |
| 2010-09-24 | Tokyo | Q32 | hard | Christina Mchale | 6-3 6-2 |
Averages over each player's completed matches in the selected window (49 vs 199). 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