Rob Gronkowski Announces NFL Retirement for Second Time (UPDATE)
Rob Gronkowski to Reunite With Tom Brady in Tampa Bay - The New York Times
Rob Gronkowski retires: Measuring Gronk's greatness as star TE hangs up his cleats after 11-year NFL career
Rob Gronkowski on retiring from NFL at age 29: 'I didn't even want to negotiate' - Good Morning America
Rob Gronkowski shares funny congratulatory post for Tom Brady after retirement announcement
Four-time Super Bowl champion Rob Gronkowski retires from NFL for second time, NFL
Four-time Super Bowl champion Rob Gronkowski announces retirement after 11 seasons with Patriots, Buccaneers
Rob Gronkowski Announces Retirement
Rob Gronkowski on retiring from NFL at age 29: 'I didn't even want to negotiate' - Good Morning America
Rob Gronkowski kept a 'broke habit' while making millions in the NFL