Kansas City Chiefs running back Jamaal Charles (25) runs the ball against the Denver Broncos defense during the first half of an NFL football game, Sunday, Dec. 1, 2013, in Kansas City, Mo. (AP Photo/Ed Zurga)

Photo by: Ed Zurga

Kansas City Chiefs running back Jamaal Charles (25) runs the ball against the Denver Broncos defense during the first half of an NFL football game, Sunday, Dec. 1, 2013, in Kansas City, Mo. (AP Photo/Ed Zurga)