Nadia Petrova defeated Simona Halep 6-1 6-1 in the US Open round of 64 on hard. The upset overturned the form book — Simona Halep came in leading the head-to-head 2–1, defending last year's round of 64, but Nadia Petrova had been the form player, winning 3 of their last 7 on hard. Nadia Petrova narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-10-15 | Moscow | R32 | hard | Simona Halep | 3-6 7-5 7-5 |
| 2012-09-24 | Tokyo | R32 | hard | Nadia Petrova | 7-6(4) 6-0 |
| 2012-03-19 | Miami | R64 | hard | Simona Halep | 6-3 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 (79 vs 197). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About