Yanina Wickmayer defeated Bethanie Mattek Sands 7-5 7-6 in the Birmingham semi-final on grass. The upset overturned the form book — Bethanie Mattek Sands came in defending last year's round of 64. Yanina Wickmayer extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-08-05 | Toronto | R64 | hard | Yanina Wickmayer | 6-4 2-6 6-4 |
| 2013-04-22 | Stuttgart | R32 | clay | Bethanie Mattek Sands | 6-2 6-1 |
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 (200 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About