After Rob Gronkowski completes a surprise retirement u-turn, who else has followed suit?
Tom Brady retires after 22 seasons, 7 Super Bowl titles
Big tight end Rob Gronkowski fights off injuries to bring Patriots to edge of Super Bowl title – New York Daily News
Report: The Buffalo Bills Interested In Rob Gronkowski
Career Tribute: Rob Gronkowski - MUT 22
Rob Gronkowski set to retire from football after nine seasons with the Patriots
Tom Brady Says Rob Gronkowski Would Be 'Really Good' at Pickleball — and Calls Himself Just 'Alright'
Tight end Rob Gronkowski announces his retirement for the second time after 11 seasons with the NFL
Rob Gronkowski looks absolutely jacked post NFL retirement in latest workout video
Rob Gronkowski retires from NFL after 11 years with Patriots, Bucs
Ten other sportspeople who came back after retiring - with mixed results
Rob Gronkowski retires (again) from NFL, revisited: Why former Buccaneers, Patriots tight end called it a career
Four-time Super Bowl champion Rob Gronkowski announces retirement after 11 seasons with Patriots, Buccaneers