An undrafted free agent out of William Penn in 2012, Harrison became a regular part of the defensive rotation in 2013 and was the best run-stuffing defensive tackle in football for the Jets from 2013-15. He continued that dominance over the next three seasons with the Giants and Lions.
As a Jet, Harrison’s best season came in 2015. Despite playing just the 25th-most snaps against the run (271) among interior defensive linemen, Harrison led the position with 49 run stops, seven more than any other player. His run-stop percentage of 18.1% led the position and stands as the second-best single-season mark since 2006, trailing only Sione Pouha‘s 21.