Serena Williams taken to three sets by Zheng Jie . Four-time champion will next face Yaroslav Shvedova . TL;DR On the way she had beaten the American superstar and came close to pulling off another upset after taking the first set tiebreak . Defending champion Petra Kvitova eases through .
Serena Williams taken to three sets by Zheng Jie . Four-time champion will next face Yaroslav Shvedova . TL;DR Defending champion Petra Kvitova eases through .