Rob Gronkowski Announces Retirement From The NFL – Hollywood Life
Ex-Patriots tight end Rob Gronkowski announces NFL retirement – NBC Sports Boston
Buccaneers Tight End Rob Gronkowski Says He Will Retire, Again
Rob Gronkowski retires, won't join Tom Brady for 3rd season
Rob Gronkowski announces retirement
Rob Gronkowski retires from the NFL again - The Boston Globe
Tampa Bay Buccaneers TE Rob Gronkowski announces retirement from NFL after 11 seasons
Wildcat product Rob Gronkowski announces retirement, again
Rob Gronkowski formally announces NFL retirement for second time - On3
Rob Gronkowski retires, won't join Tom Brady for 3rd season
Rob Gronkowski announces retirement from NFL AGAIN in emotional Instagram post months after Tom Brady teased new career