Flavia Pennetta defeated Samantha Stosur 6-4 6-3 in the San Diego quarter-final on hard. The result followed the form book — Flavia Pennetta came in leading the head-to-head 5–0. Flavia Pennetta extended the head-to-head to 6–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-08-31 | US Open | R16 | hard | Flavia Pennetta | 6-4 6-4 |
| 2015-03-09 | Indian Wells | R32 | hard | Flavia Pennetta | 6-4 6-2 |
| 2014-03-03 | Indian Wells | R32 | hard | Flavia Pennetta | 6-4 3-6 6-1 |
| 2010-01-11 | Sydney | R32 | hard | Flavia Pennetta | 6-3 6-1 |
| 2009-08-03 | Los Angeles | F | hard | Flavia Pennetta | 6-4 6-3 |
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 197). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About