Patriots tight end Rob Gronkowski announces retirement
Rob Gronkowski Leaves Possible Hint at Return: Analysis
Rob Gronkowski says there is one NFL coach who can (maybe) get him out of retirement
Rob Gronkowski: This is one of the greatest accomplishments in sports history - NBC Sports
Rob Gronkowski jokes he'll unretire if he makes Super Bowl field goal
Buccaneers Tight End Rob Gronkowski Says He Will Retire, Again
Rob Gronkowski to Play for Tampa Bay Buccaneers Pending Physical
Why did Gronk retire? Timeline of NFL retirement, comeback - Sports Illustrated
Will Rob Gronkowski Come Out of Retirement for Tom Brady?
Former Patriots and Bucs star Rob Gronkowski says there's one coach who could get him to unretire. Who is it? - AS USA
Tom Brady won't stay retired long, Rob Gronkowski says