Arizona Legend Rob Gronkowski officially retires from the NFL
Patriots tight end Rob Gronkowski announces retirement
Former Wildcat and four-time Super Bowl champion Rob Gronkowski retires from the NFL again – The Daily Wildcat
Rob Gronkowski's future still unclear after Super Bowl win vs. Rams - Sports Illustrated
Rob Gronkowski Is Heading to the Super Bowl, but Not With the New England Patriots
Former Patriots great Rob Gronkowski retires for a second time
New England Patriots tight end Rob Gronkowski announces retirement, New England Patriots
Will Rob Gronkowski retire? Patriots star offers hint after Super Bowl win
Rob Gronkowski Doesn't Miss Football - The New York Times
7-time Super Bowl champ Brady retiring, or is he?
Patriots trade retired Rob Gronkowski to Buccaneers to reunite with Tom Brady - The Boston Globe