Pat Williams said Peterson lucky

Vikings defensive tackle Pat Williams said Adrian Peterson is one of the best running backs in the league. But, Williams said the Vikings defense would not need to allocate additional personnel to stop him. "Nah, we ain't got to stack the box against Adrian," Williams said. "We can put seven against Adrian. I always tell him that. "I always tell him that. 'Hey, you're lucky we're on the same team.' " Peterson is second in the league in rushing yards and is the defending rushing champion. The Vikings run defense has been No. 3 for three consecutive seasons and is currently No. 9 through four games.