Wimbledon champion Andy Murray will have surgery on a long-standing back problem and is set to miss the rest of the season.
A statement from his management company says Murray has sought medical advice after playing on hard courts and clay since winning his Wimbledon in July for his second grand slam title.
The statement released on Thursday says Murray's "aim is to be fully fit for the new season."
The third-ranked Murray is likely to miss the season-ending ATP World Tour Finals in London on Nov. 4-11, as well as the Masters events in Shanghai and Paris in October.
The Scot pulled out of the French Open after problems with his back flared up at the Rome Masters in May.