U.S. Live Stream Highlights Roger Federer Vs. Open 2011 Novak Djokovic: In the U.S. Open 2011, we have two of the favorites going head to head for the big game of the semifinals of the U.S. Open in 2011. This is the game that Roger Federer will have to wait to play his best against the big fish at the moment the Serbian Novak Djokovic. The winner of this match will go to the next game is a final