Rob Gronkowski retires for second time after 11-year career
Rob Gronkowski, 4-Time Super Bowl Champ, Retires from NFL a Second Time
Rob Gronkowski Retiring From Tampa Bay Bucs, NFL For 2nd Time
New England Patriots tight end Rob Gronkowski announces retirement
Rob Gronkowski announces second retirement from NFL
Rob Gronkowski Retired. Again. - The New York Times
Former New England Patriot Rob Gronkowski retires for a second time – Fall River Reporter
Rob Gronkowski retiring from the NFL again
Rob Gronkowski announces retirement
Rob Gronkowski Announces 2nd Retirement From NFL
New England Patriots tight end Rob Gronkowski retires from the NFL
Patriots tight end Rob Gronkowski announces retirement