Denver Broncos quarterback Peyton Manning steps back to pass against the Kansas City Chiefs in the fourth quarter of an NFL football game, Sunday, Dec. 30, 2012, in Denver. (AP Photo/Jack Dempsey)

Photo by: Jack Dempsey

Denver Broncos quarterback Peyton Manning steps back to pass against the Kansas City Chiefs in the fourth quarter of an NFL football game, Sunday, Dec. 30, 2012, in Denver. (AP Photo/Jack Dempsey)