Rafael Nadal is confident of being fit to defend his Olympic singles title in London later this month, despite being forced to pull out of a charity exhibition match with Novak Djokovic.
The pair, who have contested the last four grand slam finals, were scheduled to face each other at Real Madrid's Bernabeu stadium on July 14 but it has been cancelled because Nadal is struggling with tendinitis in his knee.
The Spaniard, beaten by Lukas Rosol in the second round of Wimbledon last week, has been dogged by such problems throughout his career and has been advised to rest for 15 days.
Nadal said in a statement: "I was with my doctors on Monday and started already my treatment with the goal to be ready for the London Olympic Games and represent Spain once again."
The 26-year-old beat Djokovic to win the gold medal in Beijing four years ago and will be among the favourites to do so again in the Olympic tournament at Wimbledon, which begins on July 28.