Serena Williams has called off her Grand Slam comeback, pulling out of the French Open because of a chest injury before she was supposed to play Maria Sharapova.
Williams announced her withdrawal at a news conference at Roland Garros on Monday.
Williams' voice quivered as she said she can't serve because of a problem with her tight pectoral muscle.
She and Sharapova were scheduled to play a fourth-round match Monday.
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