Rob Gronkowski retires, won't join Tom Brady for 3rd season
Buccaneers' Gronkowski announces retirement from NFL for second time
Rob Gronkowski announces his NFL retirement
Tampa Bay Buccaneers TE Rob Gronkowski retiring from NFL for
Rob Gronkowski announces his NFL retirement, but his agent not
Rob Gronkowski announces his official retirement from the NFL
Rob Gronkowski Retired. Again. - The New York Times
Rob Gronkowski Retiring From Tampa Bay Bucs, NFL For 2nd Time
Rob Gronkowski retires again, but could make another comeback in
Gronk reached out to Bucs about potential return, opted to stay