Sabine Lisicki defeated Agnieszka Radwanska 7-6 2-6 6-2 in the Stanford quarter-final on hard. The upset overturned the form book — Agnieszka Radwanska came in leading the head-to-head 3–1, defending last year's semi-final, but Sabine Lisicki had been the form player, winning 2 of their last 4 on hard. Sabine Lisicki narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2014-08-11 | Cincinnati | R16 | hard | Agnieszka Radwanska | 6-1 6-1 |
| 2014-08-04 | Montreal | R16 | hard | Agnieszka Radwanska | 6-1 3-6 6-3 |
| 2013-06-24 | Wimbledon | SF | grass | Sabine Lisicki | 6-4 2-6 9-7 |
| 2012-02-20 | Dubai | QF | hard | Agnieszka Radwanska | 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 198). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About