roger federer became the first man to reach 11 consecutive semifinals at the australian open following his four-set victory over andy murray in the quarterfinals. victoria azarenka lost to agnieszka radwańska, ending a seven match winning streak over radwańska and an eighteen match winning streak at the event. by defeating azarenka, radwańska advanced to her third major semifinal, the first since the 2013 wimbledon championships.