Former number one Roger Federer has pulled out of the Rio Olympics and will miss the rest of the season, including the U.S. Open.
He will be out due to needing extensive rehabilitation on his knee after surgery.
Last month he described how one move sparked a chain of bad luck which resulted in left knee surgery in February, and him sitting out the French Open.
For much of his career, the former world number one had been blessed with a body that seemed bullet-proof against the aches, pains and injuries suffered by most top athletes.
One false move by the man known for his gliding footwork, following his Australian Open semi-final loss, means he would have gone a whole season without a title for the first time since 2000.
With Federer not taking part in the Rio Olympics, this sees his hopes of winning an Olympic singles title come to an end.
However, he was clearly rattled when he landed heavily on his left knee after rolling his ankle during the fifth set of his semi-final defeat to Canadian Milos Raonic at Wimbledon.
Although Federer, who was left face down on the turf following the fall, got up to complete the match, he was worried about the long term effects on his knee.