The results of the Australian Open men's singles Tuesday are as follows:
Quarter-final results (prefix denotes seeding), according to Xinhua:
8-Stanislas Wawrinka, Switzerland, beat 2-Novak Djokovic, Serbia; 2-6, 6-4, 6-2, 3-6, 9-7
7-Tomas Berdych, Czech Republic, beat 3-David Ferrer, Spain; 6-1, 6-4, 2-6, 6-4
