Rob Gronkowski retires after 11 seasons, 4 Super Bowl championships
Fantasy football reaction: Rob Gronkowski retires again
Rob Gronkowski agrees to come out of retirement to play in Tampa Bay with Tom Brady
Rob Gronkowski Announces Retirement From The NFL – Hollywood Life
Rob Gronkowski announces his retirement from NFL for second time
Former Patriots and Bucs star Rob Gronkowski says there's one coach who could get him to unretire. Who is it? - AS USA
Tom Brady is returning to Tampa to play 23rd season in NFL - WHYY
Why did Gronk retire? Timeline of NFL retirement, comeback - Sports Illustrated
Rob Gronkowski's replacement? Tampa Bay Buccaneers sign veteran tight end Kyle Rudolph
Rob Gronkowski retirement: Tom Brady has hilarious response to news that he could spur (another) NFL comeback
Rob Gronkowski retires: Top on-field, off-field moments of the tight end's legendary NFL career