PHOENIX, ARIZONA - APRIL 09:  NFL player Rob Gronkowski attends Muhammad Ali's Celebrity Fight Night XXII at the JW Marriott Phoenix Desert Ridge Resort & Spa on April 8, 2016 in Phoenix, Arizona.  (Photo by Mike Windle/Getty Images for Celebrity Fight Night)
PHOENIX, ARIZONA - APRIL 09: NFL player Rob Gronkowski attends Muhammad Ali's Celebrity Fight Night XXII at the JW Marriott Phoenix Desert Ridge Resort & Spa on April 8, 2016 in Phoenix, Arizona. (Photo by Mike Windle/Getty Images for Celebrity Fight Night) Mike Windle Getty Images for Celebrity Fight
PHOENIX, ARIZONA - APRIL 09: NFL player Rob Gronkowski attends Muhammad Ali's Celebrity Fight Night XXII at the JW Marriott Phoenix Desert Ridge Resort & Spa on April 8, 2016 in Phoenix, Arizona. (Photo by Mike Windle/Getty Images for Celebrity Fight Night) Mike Windle Getty Images for Celebrity Fight