Caroline Wozniacki defeated Samantha Stosur 6-3 6-2 in the US Open round of 128 on hard. The result followed the form book — Caroline Wozniacki came in leading the head-to-head 7–5, defending last year's round of 64. Caroline Wozniacki extended the head-to-head to 8–5.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2016-09-26 | Wuhan | R64 | hard | Caroline Wozniacki | 6-3 6-2 |
| 2016-07-18 | Washington | R32 | hard | Samantha Stosur | 5-7 4-3 RET |
| 2016-06-20 | Eastbourne | R32 | grass | Caroline Wozniacki | 6-2 6-1 |
| 2015-02-16 | Dubai | R32 | hard | Caroline Wozniacki | 4-6 6-1 7-5 |
| 2014-09-29 | Beijing | R32 | hard | Samantha Stosur | 6-4 7-6(9) |
| 2014-06-16 | Eastbourne | R32 | grass | Caroline Wozniacki | 7-5 6-4 |
| 2012-10-15 | Moscow | F | hard | Caroline Wozniacki | 6-2 4-6 7-5 |
| 2010-10-25 | WTA Championships | RR | hard | Samantha Stosur | 6-4 6-3 |
| 2009-10-12 | Osaka | SF | hard | Samantha Stosur | 6-0 4-6 6-4 |
| 2009-06-15 | Eastbourne | R16 | grass | Caroline Wozniacki | 6-1 5-7 6-1 |
| 2009-04-06 | Ponte Vedra Beach | R32 | clay | Caroline Wozniacki | 6-3 6-7(4) 6-1 |
| 2008-06-16 | Eastbourne | QF | grass | Samantha Stosur | 7-6(3) 6-4 |
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 (135 vs 112). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About