Adrian Peterson wasn't in peak shape two games into this comeback season, so he showed up at Minnesota's practice facility on his day off this week for a series of 100-yard sprints, 18 in all. If he didn't feel quite right then, he looks like he's in mid-career form now. Peterson plowed through San Diego's defense for 126 yards and two touchdowns on 20 rushes in three quarters on Sunday, and the Vikings trampled Philip Rivers and the injury-depleted Chargers 31-14. Read more http://espn.go.com/nfl/recap?gameId=400791592
