Agnieszka Radwanska won her 13th consecutive match of the year, advancing to the Australian Open quarterfinals with a 6-2, 6-4 win over Ana Ivanovic on January 20, 2013. Photo: AP
Novak Djokovic edged past Stanislas Wawrinka 1-6, 7-5, 6-4, 6-7 (5-7), 12-10 to move into the Australian Open quarterfinals. Photo: AP
David Ferrer breezed past Kei Nishikori (R) in three sets to enter the Melbourne quarterfinals for a third straight year. Photo: AP
Ekaternia Makarova knocked world No. 5 Angelique Kerber out of the Australian Open to reach the quarters. Photo: AP
Tomas Berdych moved into the quarterfinals with a straight sets victory over Kevin Anderson. Photo: AP
Maria Sharapova continued her dominant run at the Australian Open by crushing Kirsten Flipkens 6-1, 6-0. Photo: AP
Nicolas Almagro will meet fellow Spaniard David Ferrrer in the quarterfinals after his fourth round opponent Janko Tipsarevic retired hurt. Photo: AP
Li Na reached the Melbourne quarterfinals with a 7-6, 6-1 win over German 18th seed Julia Goerges. Photo: AP
Roger Federer chats with Australian rugby league player Ben Barba (R) in the players lounge in Melbourne. Photo: AP/ Tennis Australia