Highlights from the Dubai Duty Free Tennis Championships semi-final - Roger Federer and Novak Djokovic

Some of the best action from the scintillating match between Roger Federer and Novak Djokovic. The Swiss took an hour and 52 minutes to oust the defending champion 3-6, 6-3, 6-2

http://www.youtube.com/watch?v=9Ji5rM90FCI