Carla Wozniacki beats Magdalena Rybarikova 2-0 at Australian Open 2018

Caroline Wozniacki of Denmark hits a return during the women's singles fourth round match against Magdalena Rybarikova of Slovakia at Australian Open 2018 in Melbourne, Australia, Jan. 21, 2018. Carla Wozniacki won 2-0. (Xinhua/Zhu Hongye)