Patriots tight end Rob Gronkowski announces retirement
Rob Gronkowski Needs A Few Weeks To Decide On His Future, But Hints He May Still Play Even If Tom Brady Retires - CBS Boston
Rob Gronkowski announces his second retirement from playing football
Rob Gronkowski Announces 2nd Retirement From NFL
Rob Gronkowski on excluding Patriots in second retirement post
Rob Gronkowski Retiring From NFL
Gronk's legacy: How does he stack up among the best to ever play tight end? - The Boston Globe
Patriots tight end Gronkowski announces retirement after 9 seasons
Tampa Bay Buccaneers TE Rob Gronkowski retiring from NFL for second time - ESPN
Rob Gronkowski retires (again) from NFL: Why we hope this one doesn't stick either