Ex-Patriots Star Gronk Announces Retirement From Football: 'I Gave
Rob Gronkowski Honors Tom Brady After NFL Retirement, Calls Time
Patriots tight end Rob Gronkowski announces retirement
Patriots TE Rob Gronkowski announces retirement
Rob Gronkowski announces retirement from NFL – Boston Herald
Ex-Wildcat Rob Gronkowski announces retirement from NFL
Four-time Super Bowl champion Rob Gronkowski announces retirement
Rob Gronkowski Announces Retirement From NFL, Again
Gronk Announces Retirement From NFL: 'Time to Move Forward' - TheWrap
Patriots Suffer Big Loss: Gronkowski Will Retire - The New York Times