Brian Urlacher was the prototype for middle linebacker in 2000s
Retired Chicago Bear middle linebacker Brian Urlacher - PICRYL - Public Domain Media Search Engine Public Domain Search
A Position of Greatness, and a Hunger for Victory - The New York Times
Best NFL pass-rushers by year: Who owns the Championship Belt? - ESPN
Urlacher, Brazile share HOF knock-on-the-door'' moments - Talk Of Fame
Brian Urlacher Hall of Fame vote: Bears LB inducted in 2018
The 50 Greatest NFL Quarterbacks of All-Time – New Arena
Zach Thomas snubbed from the Hall for another year - Stat comparison to first ballot HOFer Brian Urlacher : r/nfl
Pro Football Journal: The Top Outside Linebackers of All-Time
Brian Urlacher says contract offer from the Bears was an ultimatum