Patriots: Rob Gronkowski departure still a major problem
Rob Gronkowski kept a 'broke habit' while making millions in the NFL
Rob Gronkowski retires from the NFL again - The Boston Globe
Former Patriots TE Rob Gronkowski kills hopes of NFL comeback
Analysis: What Rob Gronkowski's retirement means for the Patriots - Pats Pulpit
Rob Gronkowski Retires From NFL - ESPN 98.1 FM - 850 AM WRUF
Gronk says he's healthy and fire burns to play with Brady
Gronkowski announces retirement from NFL
NFL News: Patriots tight end Rob Gronkowski announces his retirement - Pats Pulpit
Rob Gronkowski announces his retirement from the NFL
Rob Gronkowski retires: Measuring Gronk's greatness as star TE hangs up his cleats after 11-year NFL career
Rob Gronkowski: Former NFL player isn't making a comeback, he's hawking CBD oil