Bosa's lengthy contract holdout likely caused the hamstring injury that kept him out the first four games of the season. Once he took the field, however, his influence was undeniable. As a rookie, Bosa's game film displayed a polished ability to bull rush, good hands, fineness around the edge, speed to the quarterback and relentless effort. Anytime you put on the tape of the Chargers' defense in 2016, your eyes went immediately to No. 99. He was that noticeable.