Rob 'Gronk' Gronkowski announces retirement from Buccaneers, NFL on Instagram
Tom Brady makes Rob Gronkowski easy Buccaneers offer
Rob Gronkowski announces retirement from the NFL again - Newport Buzz
Bucs and Patriots player Rob Gronkowski reveals why Tom Brady 'owes him' after 10 years - exclusive
Why New England Patriots' Rob Gronkowski Hasn't Touched His NFL Salary
10 fun facts about NFL tight end Rob Gronkowski
Without Rob Gronkowski, winning is much less fun
NFL Week 13: Latest injury raises sobering questions about Rob Gronkowski's future – Orange County Register
Gronk's brilliance on the football field was matched by his exuberance
Rob Gronkowski on retiring from NFL at age 29: 'I didn't even want to negotiate' - Good Morning America
Bill Belichick Caused Rob Gronkowski's Tampa Bay Mutiny with Tom Brady - InsideHook