Tsvetana Pironkova defeated Bethanie Mattek Sands 7-6 0-6 6-0 in the New Haven round of 32 on hard. The upset overturned the form book — Bethanie Mattek Sands came in leading the head-to-head 2–0. Tsvetana Pironkova claimed a first win over Bethanie Mattek Sands in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-05-13 | Rome | Q32 | clay | Bethanie Mattek Sands | 7-6(6) 6-4 |
| 2014-09-19 | Wuhan | Q32 | hard | Bethanie Mattek Sands | 6-4 6-4 |
Averages over each player's completed matches in the selected window (199 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About