Guido Andreozzi Pictures
NEW YORK, NY - AUGUST 27: Jack Sock of the United States shakes hands with Guido Andreozzi of Argentina after defeating him in his mens singles first round match on Day One of the 2018 US Open at the USTA Billie Jean King National Tennis Center on August 27, 2017 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)