Tom Brady: Rob Gronkowski 'shocked' by former team-mate's retirement aged 45, saying he could still play until he is 50, NFL News
Rob Gronkowski is 'probably the best there is,' says new Patriots TE Dalton Keene, and it's 'just crazy that I'm in his shoes'
Patriots' Rob Gronkowski announces his retirement following nine NFL seasons - Los Angeles Times
Rob Gronkowski played the goofball but few can doubt his greatness, New England Patriots
Rob Gronkowski retires: Top on-field, off-field moments of the tight end's legendary NFL career
Rob Gronkowski is the Best Tight End Ever
Rob Gronkowski through the years
Ten Stats That Prove Rob Gronkowski is the Greatest Tight End of All-Time
Patriots TE Rob Gronkowski hasn't scored a touchdown in four straight games - Pats Pulpit
Rob Gronkowski: Tom Brady makes football the best it can possibly be
Rob Gronkowski couldn't have ended his career any better - Pats Pulpit
The good, the bad and the goofy: A primer on Rob Gronkowski
Rob Gronkowski had the best single-game performance by a TE in 2017, NFL News, Rankings and Statistics
Why tight ends are 'The Blood and Guts' of the NFL with author Tyler Dunne – NBC Sports Boston