Why Rob Gronkowski wanted to save all his NFL paychecks
Rob Gronkowski retires (again) from NFL, revisited: Why former Buccaneers, Patriots tight end called it a career
Buccaneers' Rob Gronkowski clears up rumors about retiring (again) after winning the Super Bowl (again)
Rob Gronkowski threatened to retire after he almost got traded to the Lions
Former Tampa Bay Bucs Tight End Rob Gronkowski Announces his Retirement from Football - Bucs Nation
Gronk Retires, But His Agent Leaves an Opening - Sports Illustrated
Tampa Bay Buccaneers Tight End Rob Gronkowski Announces Retires, 11 NFL Seasons and 4 Super Bowls
Rob Gronkowski Retired. Again. - The New York Times
4-time champion, All-Pro tight end Rob Gronkowski announces retirement
Rob Gronkowski Retires from NFL After 11-Year Career with Patriots, Buccaneers, News, Scores, Highlights, Stats, and Rumors
Rob Gronkowski Retires From NFL - ESPN 98.1 FM - 850 AM WRUF
Rob Gronkowski Announces Retirement From NFL, Again - E! Online
Rob Gronkowski, Buffalo Bills target if he decides not to retire
Rob Gronkowski On Retirement, Possible Return
Rob Gronkowski tells TMZ he'd retire from NFL if he had to decide right now