Swiss tennis great Roger Federer will miss the Olympics and the rest of the season with a knee injury.
The 17-time Grand Slam champion said he needs "more extensive rehabilitation" if he wants to prolong his career.
Federer, 34, had knee surgery in February before missing May's French Open with a back problem.
Federer said on his Facebook page he was "extremely disappointed" to not be representing Switzerland in Rio and it was "tough" to miss the rest of 2016.”
The 17-time Grand Slam champion said he needs "more extensive rehabilitation" if he wants to prolong his career.
Federer, 34, had knee surgery in February before missing May's French Open with a back problem.
Federer said on his Facebook page he was "extremely disappointed" to not be representing Switzerland in Rio and it was "tough" to miss the rest of 2016.”
