Defending champion Flavia Pennetta beat Maria Sharapova in three sets . Sharapova won the first set before the Indian rallied to win 3-6 6-3 6-2 . World No 1 Serena Williams beat Sloane Stephens 6-7 ( 3/7 ) 6-2 6-2 .
Defending champion Flavia Pennetta beat Maria Sharapova in three sets . Sharapova won the first set before the Italian rallied to win 3-6 6-3 6-2 . World No 1 Serena Williams beat Sloane Stephens 6-7 ( 3/7 ) 6-2 6-2 .