Kerrigan moved to Outside Linebacker as a sophomore, and he was a Pro Bowl in 2012. An expert pass-rusher. Kerrigan led the NFL in Forced Fumbles (5) in 2014, and Tackles for Loss (18) in 2016, and he has had four 10-plus Sack years. The former Purdue Boilermaker went to three more Pro Bowls consecutively (2016-18). Kerrigan's output declined in 2019, and he was coming off of the bench in 2020, which would be his final year in Washington, as Kerrigan signed with division rival Philadelphia. With Washington, Kerrigan had 95.5 Sacks.