
Heather Watson defeated Christina Mchale 6-3 1-6 6-1 in the Acapulco quarter-final on hard. The upset overturned the form book — Christina Mchale came in leading the head-to-head 2–0, defending last year's round of 16. Heather Watson claimed a first win over Christina Mchale in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2016-02-22 | Acapulco | R32 | hard | Christina Mchale | 4-6 6-0 7-6(1) |
| 2011-04-04 | Charleston | R64 | clay | Christina Mchale | 5-7 6-3 7-6(3) |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (199 vs 81). ATP, WTA & Challenger.