Wawrinka knocks defending champion Djokovic out of Australian Open

Defending champion Novak Djokovic lost to Stanislas Wawrinka of Switzerland in the men's singles quarterfinals at Australian Open here Tuesday.

Eighth seed Wawrinka rallied to beat the second seeded Serb 2-6, 6-4, 6-2, 3-6, 9-7.

In the semifinals, Wawrinka will face seventh seed Tomas Berdych, who beat third seed David Ferrer of Spain 6-1, 6-4, 2-6, 6-4.