Karl Dunbar is entering his fourth season as the Steelers' defensive line coach and his 15th year as a defensive line coach in the National Football League. He was hired by the Steelers on February 8, 2018.
In 2020, Dunbar's defensive line led the League in multiple categories, including sacks (56.0), quarterback hits (136) and quarterback pressures (198). The Steelers' defensive line tied a franchise record with three consecutive games with at least 5.0 sacks in Weeks 2-6 and continued their NFL record of 73 consecutive regular-season games with at least one sack. In addition, Pittsburgh's defense ranked in the top five in the NFL in six run defense categories, including tackles for loss (103). The Steelers limited both the New York Giants and Houston Texans to just 29 rushing yards.