Federer beats Tipsarevic 2-0 at ATP World Tour Finals
(Xinhua) 11:16, November 07, 2012
Roger Federer of Switzerland returns a shot during the men's singles Group B tennis match against Janko Tipsarevic of Serbia at the ATP World Tour Finals at the O2 Arena in London, Britain, on Nov. 6, 2012. Roger Federer won 2-0. (Xinhua/Tang Shi)