Flavia Pennetta defeated Nadia Petrova 4-6 6-4 6-3 in the US Open round of 32 on hard. The result followed the form book — Flavia Pennetta came in leading the head-to-head 4–1, defending last year's round of 64. Flavia Pennetta extended the head-to-head to 5–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-08-03 | Los Angeles | R16 | hard | Flavia Pennetta | 6-3 6-3 |
| 2009-04-27 | Stuttgart | R16 | clay | Flavia Pennetta | 6-2 6-2 |
| 2008-10-13 | Zurich | R32 | hard | Flavia Pennetta | 6-1 6-1 |
| 2004-06-21 | Wimbledon | R128 | grass | Nadia Petrova | 6-3 2-6 6-4 |
| 2004-05-10 | Rome | R32 | clay | Flavia Pennetta | 1-6 7-6(4) 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 (200 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About