Rob Gronkowski announces his official retirement from the NFL, thanks Buccaneers
Bucs TE Rob Gronkowski retires from NFL for second time
Rob Gronkowski retires: Tom Brady leads tributes to four-time Super Bowl winner
Rob Gronkowski announces second retirement from football
Stars at the Super Bowl: How Gronk and Shaq plan to party
Four-time Super Bowl champion Rob Gronkowski announces retirement after 11 seasons with Patriots, Buccaneers
Tom Brady: Rob Gronkowski 'shocked' by former team-mate's retirement aged 45, saying he could still play until he is 50, NFL News
Patriots Tight End Rob Gronkowski Announces Retirement
Rob Gronkowski Announces Retirement From NFL, Again
Rob Gronkowski Announces NFL Retirement for Second Time (UPDATE)
Rob Gronkowski Retiring From Tampa Bay Bucs, NFL For 2nd Time