Twelve-time Grand Slam champion Novak Djokovic will not play again in 2017 because of an elbow injury.
Former world number one Djokovic, 30, retired injured during his Wimbledon quarter-final match against Tomas Berdych on 12 July.
He said then he had suffered an elbow problem for over a year and a half.
It means Djokovic will miss the US Open, which starts at Flushing Meadows on 28 August, and where the Serb won the title in 2011 and 2015.
