Roddick was scheduled to play Saturday for the St. Louis Aces in a match against Kansas City. Aces general manager Dani Apted says Roddick's injury is too severe for him to play or travel to St. Louis.
In a statement, Roddick said he's been dealing with the injury since mid-May. He did not specify the injury.
Roddick, the sixth seed at Wimbledon, was upset in the second round.
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