Serena Williams defeating Maria Kirilenko 75 75, Angelique Kerber defeating Roberta Vinci 62 64, Agnieszka Radwanska defeating Polona Hercog 60 62, Caroline Wozniacki defeating Sloane Stephens 63 61.
Serena Williams defeating Maria Kirilenko 75 75, Angelique Kerber defeating Roberta Vinci 62 64, Agnieszka Radwanska defeating Polona Hercog 60 62, Caroline Wozniacki defeating Sloane Stephens 63 61.