Vera Zvonareva defeated Agnieszka Radwanska 7-5 6-3 in the Miami quarter-final on hard. The upset overturned the form book — Agnieszka Radwanska came in leading the head-to-head 4–1, defending last year's quarter-final. Vera Zvonareva narrowed the head-to-head to 4–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-10-24 | WTA Championships | RR | hard | Agnieszka Radwanska | 1-6 6-2 7-5 |
| 2011-09-26 | Tokyo | F | hard | Agnieszka Radwanska | 6-3 6-2 |
| 2011-08-08 | Toronto | R16 | hard | Agnieszka Radwanska | 6-4 7-6(4) |
| 2011-08-01 | San Diego | F | hard | Agnieszka Radwanska | 6-3 6-4 |
| 2007-10-08 | Moscow | R16 | hard | Vera Zvonareva | 6-2 6-2 |
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 198). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About