Rob Gronkowski retires, won't join Tom Brady for 3rd season
Four-time Super Bowl champion Rob Gronkowski announces retirement
Rob Gronkowski Intends To Retire
Rob Gronkowski to unretire and return to Buccaneers? RGIII urges
Rob Gronkowski retires, won't join Tom Brady for 3rd season
Tampa Bay Buccaneers not counting on Rob Gronkowski to return to
Tom Brady has retired after 22 seasons, 7 Super Bowl titles - WISH
How Long Could Tom Brady Really Have Kept Playing? - The Ringer
Rob Gronkowski retires, won't join Tom Brady for 3rd season
Rob Gronkowski says he'll play for Buccaneers this season if
Rob Gronkowski Announces 2nd Retirement From NFL