KEY BISCAYNE, FL - APRIL 02: Roger Federer of Switzerland in action against Rafael Nadal of Spain in the Men's Final at Crandon Park Tennis Center on April 2, 2017 in Key Biscayne, Florida. (Photo by Ron Elkman/Sports Imagery/Getty Images)

KEY BISCAYNE, FL - APRIL 02:  Roger Federer of Switzerland in action against Rafael Nadal of Spain in the Men's Final at Crandon Park Tennis Center on April 2, 2017 in Key Biscayne, Florida.  (Photo by Ron Elkman/Sports Imagery/Getty Images)