World No 2 Rafael Nadal will need a month of rest to recover from a knee injury that forced him to quit in the third set of his Australian Open quarterfinal match against Andy Murray.

Nadal's doctors in Barcelona advised has advised him two weeks of rest followed by two weeks of tests and physiotherapy on the knee. 

Nadal said he was happy the latest injury setback was not lingering tendinitis that sidelined the six-time Grand Slam singles champion for periods of 2009. 

He was unable to defend his Wimbledon title last year because of the injury and has not reached another Grand Slam final since his five-set win over Roger Federer at last year's Australian Open.

"I feel good and I am only thinking now of recovering well" said the Mallorcan." My main goal right now is to get ready again and fit to play the upcoming events once I am able to compete."

"It is a big disappointment for me not to be able to play at Rotterdam this year."

Nadal added "It is not important for me the ranking issue and losing a few spots, that's normal when you are not able to compete,"

"For me it is more important to play well again and to have the good feelings on the court that I had in Abu Dhabi, Doha and also at the Australian Open where I played at the highest level."

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