Williams will be the guy if the backfield is all his. If not...or if uncertain right up until game time I would go with Smith. The recent production is there, Cam is playing good, and Oakland is terrible. Jones will most certainly put up 2 tds and 80 yards if he's on your bench, but if you start him he'll give you 30 yards and other guys will snag the TDs. Go with Smith...he's guaranteed a lot of targets against a week D and plays on an offense that is doing well right now.