Simona Halep defeated Nadia Petrova 6-3 6-2 in the Miami round of 64 on hard. The upset overturned the form book — Nadia Petrova came in leading the head-to-head 2–1, defending last year's round of 64. Simona Halep 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 |
| 2012-08-27 | US Open | R64 | hard | Nadia Petrova | 6-1 6-1 |
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 79). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About