Sania Mirza defeated Nadia Petrova 6-2 6-1 in the San Diego round of 32 on hard. The upset overturned the form book — Nadia Petrova came in leading the head-to-head 2–0, defending last year's round of 64, but Sania Mirza had been the form player, winning 4 of their last 7 on hard. Sania Mirza claimed a first win over Nadia Petrova in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-01-19 | Australian Open | R64 | hard | Nadia Petrova | 6-3 6-2 |
| 2007-06-25 | Wimbledon | R64 | grass | 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 (164 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About