Samantha Stosur defeated Nadia Petrova 7-6 6-7 7-5 in the US Open round of 32 on hard. The upset overturned the form book — Nadia Petrova came in leading the head-to-head 6–3, defending last year's round of 128. Samantha Stosur narrowed the head-to-head to 6–4.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-06-17 | Eastbourne | R32 | grass | Samantha Stosur | 6-2 6-3 |
| 2012-09-24 | Tokyo | SF | hard | Nadia Petrova | 6-4 6-2 |
| 2012-05-28 | Roland Garros | R32 | clay | Samantha Stosur | 6-3 6-3 |
| 2012-03-05 | Indian Wells | R32 | hard | Nadia Petrova | 6-1 6-7(6) 7-6(5) |
| 2011-06-13 | Eastbourne | R32 | grass | Samantha Stosur | 6-1 6-4 |
| 2010-08-23 | New Haven | QF | hard | Nadia Petrova | 6-2 6-1 |
| 2008-06-16 | Eastbourne | SF | grass | Nadia Petrova | 6-3 6-3 |
| 2006-10-23 | Linz | QF | hard | Nadia Petrova | 6-1 6-3 |
| 2004-08-30 | US Open | R64 | hard | Nadia Petrova | 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 (197 vs 120). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About