Williams is dealing with a neck injury in addition to being in concussion protocol but remains questionable for Sunday's matchup against the Chargers, Tommy Yarrish of the Cowboys' official site reports.

EDGE Analysis

The 28-year-old appears unlikely to suit up Sunday despite his questionable designation. If Williams is sidelined for the Week 16 matchup, Kenny Clark and Solomon Thomas will likely both have expanded roles on Dallas' defensive line.