49ers' Trent Williams: Questionable to play Saturday

Williams (hamstring) is questionable to play Saturday versus the Seahawks.

Williams was unable to practice at all this week after suffering a hamstring injury in the team's Week 17 win over the Bears. The offensive lineman appears to be trending towards an absence in Week 18, and if that's the case, Austen Pleasants would be a top candidate to draw the start at left tackle against Seattle.