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KEY BISCAYNE, FL - MARCH 23: Mirjana Lucic-Baroni of Croatia serves to Kateryna Bondarenko of Ukraine during the Miami Open at the Crandon Park Tennis Center on March 23, 2017 in Key Biscayne, Florida. (Photo by Matthew Stockman/Getty Images)

KEY BISCAYNE, FL - MARCH 23:  Mirjana Lucic-Baroni of Croatia serves to Kateryna Bondarenko of Ukraine during the Miami Open at the Crandon Park Tennis Center on March 23, 2017 in Key Biscayne, Florida.  (Photo by Matthew Stockman/Getty Images)