Acura Classic
India's Sania Mirza hits a backhand during her second round match against Russian Nadia Petrova at the Acura Classic in California, on Wednesday.
Mirza provided the upset of the second round with a thumping 6-2, 6-1 victory over fourth seed Petrova in just 53 minutes.
The world no. 59 will face Japan's Akikio Morigami in the next round.
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Photographs: Getty Images