Roger Federer of Switzerland serves against Thanasi Kokkinakis of Australia during Day 6 of the Miami Open at the Crandon Park Tennis Center on March...
{"Image ImageDescription": "KEY BISCAYNE, FL - MARCH 24:  Roger Federer of Switzerland serves against Thanasi Kokkinakis of Australia during  Day 6 of the Miami Open at the Crandon Park Tennis Center on March 24, 2018 in Key Biscayne, Florida.  (Photo by Al Bello/Getty Images)", "Image Copyright": "2018 Getty Images"}