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Subscribe to RSSNovak Djokovic has just defeated defending champion Roger Federer in the Australian Open semi-final. Click here for the latest tennis news.
Dennis M. Sabangan / EPA
A sequence of photos of Novak Djokovic of Serbia falling over in a game against Roger Federer of Switzerland during their men's singles semi-final match at the Australian Open Grand Slam tennis tournament in Melbourne, Australia, on Jan. 27.