I kinda thought this would happen all along.
Just like Williams says, Peterson is surprisingly light for a guy that tries to run over everyone. And I don't think he's as lightning fast as he was supposed to be coming out of high school, either. (Anyone remember his laughable comment coming out of H.S. when he was asked about going straight to the pros? IIRC this was when the NBA restricted high schoolers from being drafted. Peterson said that he would be the fastest guy on the Cowboys team. LOL.)
I thought the guy was greatness his freshman year, but I'm not so sure now. Maybe he's gotten beaten up enough that it's taken some of his speed away.
Jason Garrett offense rank minus Tony Sparano: 18, 14, 7, 15, 15