Williams, who missed Buffalo's Week 5 win with a knee injury, was back at practice Wednesday, according to ESPN's Mike Rodak. We won't know his level of participation or chances of playing this week until later, but if he's able to rally and play his presence - as one of the league's better interior linemen - would go a long way in trying to beat the Patriots this week. They're a team that has owned the Bills for more than a decade, yet the Bills feel they finally have a defense this season strong enough to make a run at the division.