Williams (knee) is listed as questionable for Sunday's game against the Chargers after practicing in a limited fashion this past week.
Melvin Gordon (thumb/hip) was also a limited participant throughout the week and carries a questionable designation into Sunday, though both he and Williams appear at little risk of sitting out. Assuming both players are active, they would be in line to share carries in Week 17, with a bounce-back opportunity on tap against the Chargers' struggling run defense.