Novak Djokovic (SRB) Men's Final Novak Djokovic (SRB) defeated Roger Federer (SUI) 6-4 5-7 6-4 6-4 to win his 10th Gran Slam title and 2nd Us Open title. Tennis - 2015 US OPEN - Grand Slam ATP / WTA - USTA Billie Jean King National Tennis Centre - NEW YORK - NY - USA - 13 September 2015.