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NEW YORK, NEW YORK - AUGUST 26: Serena Williams of the United States shakes hands with Maria Sharapova of Russia after defeating her in her Women's Singles first round match during day one of the 2019 US Open at the USTA Billie Jean King National Tennis Center on August 26, 2019 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Matthew Stockman/Getty Images)

NEW YORK, NEW YORK - AUGUST 26:  Serena Williams of the United States shakes hands with Maria Sharapova of Russia after defeating her in her Women's Singles first round match during day one of the 2019 US Open at the USTA Billie Jean King National Tennis Center on August 26, 2019 in the Flushing neighborhood of the Queens borough of New York City.  (Photo by Matthew Stockman/Getty Images)