KEY BISCAYNE, FL - MARCH 24: Roger Federer of Switzerland fields questions from the media during the Miami Open presented by Itau at Crandon Park Tennis Center on March 24, 2016 in Key Biscayne, Florida. (Photo by Matthew Stockman/Getty Images)
KEY BISCAYNE, FL - MARCH 24: Roger Federer of Switzerland fields questions from the media during the Miami Open presented by Itau at Crandon Park Tennis Center on March 24, 2016 in Key Biscayne, Florida. (Photo by Matthew Stockman/Getty Images)