Tommy Haas has been forced to pull out of his fourth-round Wimbledon singles match against Roger Federer because of a stomach injury.
The German 13th seed was due to face the reigning champion on Centre Court on Monday, but Federer will now earn a bye into the quarter-finals.
Haas sustained a torn muscle in his third-round win over Dmitry Tursunov.
Federer will face 2003 French Open champion Juan Carlos Ferrero or Janko Tipsarevic in the last eight.
Ironically, this was Haas's first tournament since retiring in the opening round of the Masters Series event in Rome in May with a shoulder injury.
"I think I'm one of the guys who could have been dangerous for Roger"
This time the injury is a torn abdominal muscle and Haas explained: "I felt it in my previous match.
"I'm just going to go home now and get this thing under control. I will follow the rest of the tournament on TV.
"I wish I could have been on Centre Court but it's not to be. The way I was playing I think I'm one of the guys who could have been dangerous for Roger. It would have been a nice opportunity."
The 29-year-old has been plagued by injury problems, missing Wimbledon in 2002 and the whole of 2003 with shoulder injuries.
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