49ers LT Trent Williams Questionable for Saturday with Hamstring Injury

49ers left tackle Trent Williams (hamstring) is listed as questionable for Saturday's critical game against the Seahawks. He did not participate in practice Tuesday, Wednesday, or Thursday due to a right hamstring injury sustained last Sunday. If Williams, a 12-time Pro Bowler, is unable to play, Austen Pleasants is slated to make his first career NFL start, a significant concern for the 49ers' offensive line.