Defending champion Novak Djokovic will avoid Roger Federer and Andy Murray until the final while the Williams sisters could meet in the semi-finals as a result of the US Open draws made on Thursday. On the men’s side, where Spanish star Rafael Nadal is absent because of continuing knee trouble, the draw set up a possible rematch of the Wimbledon and Olympic finals in the semi-finals with Murray and Federer in the same half of the draw. Serbian second seed Djokovic, who opens against Italy’s Paolo Lorenzi, could face Argentina’s seventh-seeded Juan Martin Del Potro in the quarter-finals and Serb eighth seed Janko Tipsarevic or Spanish fourth seed David Ferrer in the semi-finals. On the women’s side, seven-time Grand Slam winner Venus Williams lurked as a dangerous unseeded floater and ended up in the same quarter of the draw as Polish second seed Agnieszka Radwanska. From gulftoday