Samantha Stosur defeated Tsvetana Pironkova 6-1 6-4 in the Tournament of Champions round robin on hard. The result followed the form book — Samantha Stosur came in leading the head-to-head 3–1. Samantha Stosur extended the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2016-05-23 | Roland Garros | QF | clay | Samantha Stosur | 6-4 7-6(6) |
| 2015-06-22 | Eastbourne | R32 | grass | Tsvetana Pironkova | 7-5 7-6(0) |
| 2014-01-13 | Australian Open | R64 | hard | Samantha Stosur | 6-2 6-0 |
| 2011-10-03 | Beijing | R64 | hard | Samantha Stosur | 6-4 6-0 |
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 (197 vs 198). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About