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LOUISVILLE, KY - MAY 02: NFL players Tom Brady (L) and Rob Gronkowski attend the 141st Kentucky Derby at Churchill Downs on May 2, 2015 in Louisville, Kentucky. (Photo by Robin Marchant/Getty Images for Churchill Downs)

LOUISVILLE, KY - MAY 02:  NFL players Tom Brady (L) and Rob Gronkowski attend the 141st Kentucky Derby at Churchill Downs on May 2, 2015 in Louisville, Kentucky.  (Photo by Robin Marchant/Getty Images for Churchill Downs)