Djokovic beats Federer in five-set thriller, to face Nadal

Srdan Djokovic, the father of Novak Djokovic of Serbia, wears a t-shirt with the likeness of his son as he and his wife Dijana (L) watch the match against Roger Federer of Switzerland during the US Open tennis tournament in New York, September 11, 2010. [Photo/Agencie]

Novak Djokovic of Serbia kisses the court as he celebrates his victory against Roger Federer of Switzerland during the US Open tennis tournament in New York, September 11, 2010. [Photo/Agencie]