Agent -- Gronk retired, but people change minds - ESPN
Speros: It's not so much 'Tom vs. Time' but Tom vs. time to say goodbye – Boston Herald
Schefter] Rob Gronkowski threatened to retire when informed of Pats' talks to trade TE to Lions : r/nfl
Fact-checking Patriots' 18-year NFL dynasty - What's real, what's a myth - ESPN
Why Rob Gronkowski didn't mention Patriots in retirement announcement
Patriots Week 10 FULL MG, PDF, New England Patriots
Rob Gronkowski Announces NFL Retirement After 9 Seasons with Patriots, News, Scores, Highlights, Stats, and Rumors
Shane Vereen on why Patriots aren't stressing over Gronk's retirement
Patriots unveil new uniforms ahead of 2020 season
Rob Gronkowski announces retirement from NFL – Boston Herald
The Patriots' system is still winning. This year, however, the blueprint just came together a little bit differently - The Athletic
Rob Gronkowski announces his retirement
2014 New England Patriots season - Wikipedia
Bill Belichick, Tom Brady, big wins and bigger expectations - Inside the Patriot Way - ESPN