Injured Nadal to miss 4 weeks of competition

Melbourne: Rafael Nadal will miss up to four weeks of competition to recover from a knee injury that forced him to quit in the third set of his Australian Open quarterfinal against Andy Murray.

Nadal had his right knee assessed in Spain and was advised to rest completely for two weeks, then return to tournament play two weeks after that, his management said in a statement Friday.

Nadal said it was not the recurrence of the tendinitis that sidelined him for periods of 2009, including Wimbledon.