Internet reacts to Rob Gronkowski's retirement announcement - ESPN
Rob Gronkowski Announces Retirement From NFL, Again - E! Online
Rob Gronkowski retires: New England Patriots tight end steps away
Patriots Tight End Rob Gronkowski Announces Retirement
Rob Gronkowski retires again, but could make another comeback in
Fantasy Football: Rob Gronkowski's retirement announcement leaves
Tight end Rob Gronkowski announces his retirement for the second
Gronkowski announces retirement again but is 3x the charm
Rob Gronkowski announces retirement from the NFL - Hernando Sun
Patriots tight end Rob Gronkowski announces retirement