Bill Kollar has been the defensive line coach of the Denver Broncos since 2015. He has had the pleasure of coaching Derek Wolfe, Malik Jackson, Domata Peko, and Shelby Harris among others.
Wolfe praised Kollar in a press conference Monday, calling him the best defensive line coach in the league.
Derek Wolfe, on how it important it was to him for the Broncos to retain DL coach Bill Kollar: "Bill Kollar is the best defensive line coach in the league. He's the best coach I've ever had all around. He demands the best from you and he gets it out of you.