Petra Kvitova , the 2011 Wimbledon champion , won three games in the third round . The top two seeds were Serena Williams and Victoria Azarenka of Belarus who both lost to Maria Sharapova on Friday. Ana Ivanovic rallied from a set down to beat young American Christina McHale . Men 's favorite Rafael Nadal wins in straight sets to reach the men 's fourth round .
Petra Kvitova , the 2011 Wimbledon champion , won three games in the third round . Kvitova has been suffering from a virus and said her body would n't let her `` fight '' Ana Ivanovic rallied from a set down to beat young American Christina McHale . Men 's favorite Rafael Nadal wins in straight sets to reach the men 's fourth round .