Williams (knee), who is listed as questionable for Sunday's game against the Bengals, is expected to play, Adam Schefter of ESPN reports.
He was unable to practice Thursday but was a limited participant Wednesday and Friday. Head coach Vic Fangio told reporters Friday that Williams isn't expected to have any limitations against the Bengals on Sunday. Melvin Gordon (thumb/hip) is also expected to be available Week 15, so the two running backs should operate in their usual timeshare out of the backfield.