Serbia's Novak Djokovic celebrates his quarterfinal win over Tomas Berdych at the Australian Open tennis championship on Tuesday. Photo: AP
Maria Sharapova, seeking her second title in Melbourne, crushed Ekaterina Makarova 6-2, 6-2 to set up a semifinal with China's Li Na on January 22, 2013. Photo: AP
Li Na rolled into the Australian Open semifinals, bringing Agnieszka Radwanska’s 13-match winning streak to a halt. Photo: AP
David Ferrer (L) continued his career-long mastery of Nicolas Almagro, rallying from two sets down for a 4-6, 4-6, 7-5, 7-6 (4), 6-2 win to reach the Australian Open semis. Photo: AP
Serena Williams, right, and sister Venus chat during their doubles quarterfinal against Sara Errani and Roberta Vinci. Photo: AP
Agnieszka Radwanska leaves Rod Laver Arena after losing her quarterfinal match against Li Na. Photo: AP
Jiang Shan, husband of China's Li Na cheers her on during her quarterfinal match against Agnieszka Radwanska. Photo: AP