Peng is 2-0 against Petrova this year, but both matches went to three sets.

彭帅今年对战佩特洛娃两战全胜，但是每场比赛都打到了第三盘。

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We watched you play after you suffered the knee injury in your win over Petrova in Cincinnati.

我们注意到你在辛辛那提赢了佩特洛娃的时候膝盖受伤了。

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Henin topped Petrova in 11 of their previous 13 meetings, and the early exchanges made it seem the same result was at hand.

在与佩特洛娃13次的交锋中，海宁赢得了11次胜利。 而早期的交流让海宁看起来更加胜券在握。

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Denmark's Caroline Wozniacki, Azarenka and Russia's Nadia Petrova, ranked 8-10, also received first-round byes.

CNN: Sharapova on song as L.A. seeds tumble

Sara Errani and Roberta Vinci are due to play doubles against Anastasia Pavlyuchenkova and Nadia Petrova.

BBC: Flavia Pennetta

Sixth seed Nadia Petrova , of Russia, routed Italian Antonella Serra Zanetti 6-0 6-1.

BBC: SPORT | Tennis | Clijsters eases into third round