Who is Rob Gronkowski and why is he retiring?
New England Patriots tight end Rob Gronkowski announces retirement, New England Patriots
Patriots TE Rob Gronkowski announces retirement - Sports Illustrated
Rob Gronkowski announces retirement from NFL – Boston Herald
Rob 'Gronk' Gronkowski announces retirement from Buccaneers, NFL on Instagram
Patriots tight end Rob Gronkowski announces retirement
Rob Gronkowski Announces Retirement From The NFL – Hollywood Life
Brian Daboll downplays talk that close friend Rob Gronkowski could un- retire for Giants - NBC Sports
Rob Gronkowski announces retirement from the NFL again
Four-time Super Bowl champion Rob Gronkowski announces retirement after 11 seasons with Patriots, Buccaneers
Patriots tight end Rob Gronkowski announces retirement
Gronk Announces Retirement After 9 Year Career, 3rd Super Bowl Win
Tom Brady reacts as Rob Gronkowski announces retirement from NFL
Gronkowski announces retirement again but is 3x the charm? - Premier Players, Inc.