Roberta Vinci defeated Agnieszka Radwanska 6-1 6-4 in the US Open round of 16 on hard. The upset overturned the form book — Agnieszka Radwanska came in leading the head-to-head 8–1, defending last year's round of 64, but Roberta Vinci had been the form player, winning 3 of their last 5 on hard. Roberta Vinci narrowed the head-to-head to 8–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2016-02-22 | Doha | QF | hard | Agnieszka Radwanska | 3-6 6-2 6-3 |
| 2014-09-29 | Beijing | R32 | hard | Roberta Vinci | 6-4 6-4 |
| 2014-05-05 | Madrid | R16 | clay | Agnieszka Radwanska | 6-1 6-1 |
| 2014-04-21 | Stuttgart | R16 | clay | Agnieszka Radwanska | 6-3 6-2 |
| 2013-01-07 | Sydney | QF | hard | Agnieszka Radwanska | 6-4 7-5 |
| 2012-05-07 | Madrid | R16 | clay | Agnieszka Radwanska | 7-6(1) 6-4 |
| 2010-05-03 | Rome | R32 | clay | Agnieszka Radwanska | 6-1 6-0 |
| 2009-08-24 | New Haven | R32 | hard | Agnieszka Radwanska | 2-6 6-2 7-6(5) |
| 2008-05-12 | Rome | R32 | clay | Agnieszka Radwanska | 3-6 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 (200 vs 198). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About