Patriots trade Rob Gronkowski to Buccaneers for 4th-round pick
Rob Gronkowski - Tight end announces his retirement - Fantasy Index
Rob Gronkowski's Agent Reveals 'Gut Feeling' on Comeback
Rob Gronkowski Announces Retirement From the NFL
Rob Gronkowski won't return to NFL even if Tom Brady calls
Former Patriots great Rob Gronkowski retires for a second time
NY Jets nemesis Rob Gronkowski is calling it a career once more
Ex-Wildcat Rob Gronkowski announces retirement from NFL
Rob Gronkowski Announces Retirement From The NFL – Hollywood Life
Rob Gronkowski retires again, but could make another comeback in
Ex-Wildcat Rob Gronkowski announces retirement from NFL