Serena Williams was forced to withdraw from the French Open before a highly anticipated match between her and Maria Sharapova on Monday.

The reason for her withdrawal was an injured pectoral muscle, and Patrick Mouratoglou—Serena's coach—stopped by the Tennis Channel set to tell everybody a bit more about what is going on with the 23-time Grand Slam champion. See what he had to say here:

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WATCH: Serena's coach, Patrick Mouratoglou, discusses her injury

WATCH: Serena's coach, Patrick Mouratoglou, discusses her injury

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