Caroline Wozniacki beats Kiki Bertens 2-0 at Australian Open 2018

Caroline Wozniacki of Denmark returns a shot during the women's singles third round match against Kiki Bertens of the Netherlands at Australian Open 2018 in Melbourne, Australia, Jan. 19, 2018. Caroline Wozniacki won 2-0. (Xinhua/Zhu Hongye)