Djokovic , who took the season opening grand slam in Australia , will be defending his U.S. Open title when it starts in New York on August 27 . Roger Federer beats Novak Djokovic to win Madrid Masters . Federer triumphs 6 - 4 7 - 5 in just one hours 20 minutes . Swiss maestro increases his advantage at top of world rankings . Li Na of China wins WTA title in Cincinnati .
Roger Federer beats Novak Djokovic to win Madrid Masters . Federer triumphs 6 - 4 7 - 5 in just one hours 20 minutes . Swiss maestro increases his advantage at top of world rankings . Li Na of China wins WTA title in Cincinnati .