The Spanish tennis player Rafael Nadal will be out of action for at least another two months.
Nadal, who hasn't played since his second round defeat at Wimbledon in June, says his troublesome knee will not be ready for the Davis Cup semi-final against the United States.
Nadal has been having treatment for a partial tear of the patella tendon and an inflammation of the Hoffa's fat pad of his left knee.
The world number three missed the Olympic Games, where he was the defending champion, and was forced to withdraw from the US Open.
Spain, who are bidding for a fourth Davis Cup crown in five year, take on the US in Gijon, northern Spain, on September 14th.