The 13th-seeded German suffered the injury in his third-round victory Friday against Russia's Dmitry Tursunov. He was scheduled to face top-seeded and defending champion Roger Federer in the fourth round Monday.
"I wish I could have been on Center Court but it's not to be," Haas told the BBC. "It would have been a nice opportunity. I'm just going to go home now and get this thing under control."
Haas was sidelined for two months before Wimbledon with a shoulder injury. With Haas' withdrawal, Federer advanced to the Wednesday's quarterfinals in a walkover to next face the winner of Monday's match between former French Open champion Juan Carlos Ferrero and Janko Tipsarevic.
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