Janko Tipsarevic of Serbia returns the ball against Switzerland's Roger Federer during their third round match of men's singles in the French Open tennis tournament at the Roland Garros in Paris May 27, 2011. Federer won 3-0. (Xinhua)
Janko Tipsarevic of Serbia returns the ball against Switzerland's Roger Federer during their third round match of men's singles in the French Open tennis tournament at the Roland Garros in Paris May 27, 2011. Federer won 3-0. (Xinhua)