Williams carried the ball four times for 26 yards during Sunday's win in Cincinnati.
Williams was needed once LeSean McCoy left the game for good with a dislocated thumb. The rookie did well spelling Mike Gillislee, while it was noteworthy that veteran Reggie Bush didn't receive a carry. However, the Bills think McCoy will be able to play through his thumb injury, which relegates Williams back to a No. 3 role.