'This is Sparta' is U.S. Open champ Djokovic's battle cry

Novak Djokovic summoned some cinematic inspiration to help him conquer grand slam king Roger Federer and silence the roaring supporters of the Swiss at Sunday's U.S. Open men's final. The Serb said after winning the titanic battle against Federer that he had watched the movie '300' the night before to put him in the mood, and had its star, Scottish actor Gerard Butler, in his player's box. The 2007 film depicts a vastly outnumbered band of 300 Spartans fighting off advancing Persians in 480 B.C.