NEW YORK, NY - SEPTEMBER 03: Pablo Carreno Busta of Spain (L) shakes hands with Denis Shapovalov of Canada after defeating him in their fourth round match on Day Seven of the 2017 US Open at the USTA Billie Jean King National Tennis Center on September 3, 2017 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Clive Brunskill/Getty Images)
