Rob Gronkowski: Former NFL player isn't making a comeback, he's
Rob Gronkowski retires as the greatest tight end of all time - Pats Pulpit
Rob Gronkowski Announces Retirement From the NFL
New England Patriots tight end Rob Gronkowski announces retirement
Gronk Announces Retirement From NFL: 'Time to Move Forward' - TheWrap
Rob Gronkowski Announces Retirement From NFL, Again
4-time champion, All-Pro tight end Rob Gronkowski announces
Rob Gronkowski announces his official retirement from the NFL
Rob Gronkowski says he's open to retiring with the Patriots
New England Patriots tight end, former Arizona star Rob Gronkowski
Rob Gronkowski will be back with the Patriots in 2018, as expected
Rob Gronkowski announces retirement from the NFL - Hernando Sun
Patriots tight end Rob Gronkowski announces retirement
Rob Gronkowski Announces Retirement From NFL