How does Rob Gronkowski compare to the best tight ends in NFL history?
Best tight ends of all time: Travis Kelce, Rob Gronkowski among best in NFL history
Rob Gronkowski vs Tony Gonzalez Debate Who is The Greatest Tight End in NFL History?
Let's rank the ten best tight ends ever - by Tyler Dunne
Gronkowski announces retirement again but is 3x the charm? - Premier Players, Inc.
Let's rank the ten best tight ends ever - by Tyler Dunne
Top 5 NFL TE grades: Rob Gronkowski still sits atop the position, PFF News & Analysis
Best tight ends of all time: Travis Kelce, Rob Gronkowski among best in NFL history
The NFL's top 12 tight ends
Ranking the 5 greatest NFL tight ends of all time ft. Rob Gronkowski
With Rob Gronkowski retired, tight end position wide open for Patriots - The Boston Globe