Novak Djokovic has ruled himself of all competitive tennis for the rest of the year.
The Serbian former world No 1 has been struggling with an elbow injury for several weeks and had already declared his intention to sit out the US Open.
But that break from tennis will now stretch beyond the autumn.
Djokovic’s doctor said on Monday that the 30-year-old could require three months’ rest for his elbow problem.
He was forced to retire during his Wimbledon quarter-final against Tomas Berdych.
In addition to the US Open, Djokovic will miss the Asian Swing, the ATP Finals and his country’s Davis Cup semi-final clash with France.
He could end the year outside the world top 10.