3 reasons Rob Gronkowski is greatest tight end in NFL history
Rob Gronkowski on NFL Retirement: 'Football Was Bringing Me Down'
Gronk Retires, But His Agent Leaves an Opening - Sports Illustrated
Patriots trade Rob Gronkowski to Buccaneers for 4th-round pick
Rob Gronkowski doesn't care if Tom Brady calls him, he's retired
Rob Gronkowski retirement tweet. : r/Patriots
Rob Gronkowski announces retirement
Rob Gronkowski announces second retirement from football
Rob Gronkowski he'll play for the Buccaneers if he returns to
Rob Gronkowski retires: His impact and legacy - Sports Illustrated
Patriots trade retired Rob Gronkowski to Buccaneers to reunite