Minnesota Vikings running back Adrian Peterson runs with the ball during the third quarter of an NFL football game against the St. Louis Rams Sunday, Dec. 16, 2012, in St. Louis. (AP Photo/Seth Perlman)

Photo by: Seth Perlman

Minnesota Vikings running back Adrian Peterson runs with the ball during the third quarter of an NFL football game against the St. Louis Rams Sunday, Dec. 16, 2012, in St. Louis. (AP Photo/Seth Perlman)