Kansas City Chiefs running back Jamaal Charles (25) celebrates his touchdown run during the NFL regular season game between the Kansas City Chiefs and the Oakland Raiders on Sunday, Dec. 15, 2013 at the O.co Coliseum in Oakland, Calif. (Ric Tapia/NFL)

Kansas City Chiefs running back Jamaal Charles (25) celebrates his touchdown run during the NFL regular season game between the Kansas City Chiefs and the Oakland Raiders on Sunday, Dec. 15, 2013 at the O.co Coliseum in Oakland, Calif. (Ric Tapia/NFL)

Oakland Raiders wide receiver Andre Holmes, left, catches a pass over Kansas City Chiefs cornerback Marcus Cooper during the third quarter of an NFL football game in Oakland, Calif., Sunday, Dec. 15, 2013. (AP Photo/Ben Margot)

Oakland Raiders wide receiver Andre Holmes, left, catches a pass over Kansas City Chiefs cornerback Marcus Cooper during the third quarter of an NFL football game in Oakland, Calif., Sunday, Dec. 15, 2013. (AP Photo/Marcio Jose Sanchez)

Kansas City Chiefs head coach Andy Reid shakes hands with Oakland Raiders head coach Dennis Allen during the NFL regular season game on Sunday, Dec. 15, 2013 at the O.co Coliseum in Oakland, Calif. (Ric Tapia/NFL)

Kansas City Chiefs running back Jamaal Charles (25) runs off the field after the NFL regular season game between the Kansas City Chiefs and the Oakland Raiders on Sunday, Dec. 15, 2013 at the O.co Coliseum in Oakland, Calif. (Ric Tapia/NFL)

Oakland Raiders cheerleader preforms during the NFL regular season game between the Kansas City Chiefs and the Oakland Raiders on Sunday, Dec. 15, 2013 at the O.co Coliseum in Oakland, Calif. (Ric Tapia/NFL)

Kansas City Chiefs quarterback Chase Daniel (10) throws on the run during the NFL regular season game between the Kansas City Chiefs and the Oakland Raiders on Sunday, Dec. 15, 2013 at the O.co Coliseum in Oakland, Calif. (Ric Tapia/NFL)

Oakland Raiders cheerleader preforms during the NFL regular season game between the Kansas City Chiefs and the Oakland Raiders on Sunday, Dec. 15, 2013 at the O.co Coliseum in Oakland, Calif. (Ric Tapia/NFL)

Oakland Raiders wide receiver Andre Holmes (18) catches a pass over Kansas City Chiefs cornerback Marcus Cooper during the NFL regular season game between the Kansas City Chiefs and the Oakland Raiders on Sunday, Dec. 15, 2013 at the O.co Coliseum in Oakland, Calif. (Ric Tapia/NFL)

Kansas City Chiefs running back Jamaal Charles (25) during the NFL regular season game between the Kansas City Chiefs and the Oakland Raiders on Sunday, Dec. 15, 2013 at the O.co Coliseum in Oakland, Calif. (Ric Tapia/NFL)

Oakland Raiders quarterback Matt McGloin (14) during the NFL regular season game between the Kansas City Chiefs and the Oakland Raiders on Sunday, Dec. 15, 2013 at the O.co Coliseum in Oakland, Calif. (Ric Tapia/NFL)

Kansas City Chiefs quarterback Alex Smith (11) hands off to Kansas City Chiefs running back Jamaal Charles (25) during the NFL regular season game between the Kansas City Chiefs and the Oakland Raiders on Sunday, Dec. 15, 2013 at the O.co Coliseum in Oakland, Calif. (Ric Tapia/NFL)

Oakland Raiders running back Rashad Jennings (27) during the NFL regular season game between the Kansas City Chiefs and the Oakland Raiders on Sunday, Dec. 15, 2013 at the O.co Coliseum in Oakland, Calif. (Ric Tapia/NFL)

Oakland Raiders quarterback Matt McGloin (14) throws during the NFL regular season game between the Kansas City Chiefs and the Oakland Raiders on Sunday, Dec. 15, 2013 at the O.co Coliseum in Oakland, Calif. (Ric Tapia/NFL)

Kansas City Chiefs linebacker Frank Zombo (51) celebrates with strong safety Eric Berry, left, and cornerback Brandon Flowers (24) after intercepting Oakland Raiders quarterback Matt McGloin during the fourth quarter of an NFL football game in Oakland, Calif., Sunday, Dec. 15, 2013. The Chiefs won 56-31. (AP Photo/Marcio Jose Sanchez)

Kansas City Chiefs running back Jamaal Charles, left, shakes hands with Oakland Raiders wide receiver Jacoby Ford (12) after an NFL football game in Oakland, Calif., Sunday, Dec. 15, 2013. The Chiefs won 56-31. (AP Photo/Marcio Jose Sanchez)

Kansas City Chiefs running back Knile Davis (34) celebrates with running back Cyrus Gray (32) after running for a 17-yard touchdown during the fourth quarter of an NFL football game against the Oakland Raiders in Oakland, Calif., Sunday, Dec. 15, 2013. (AP Photo/Marcio Jose Sanchez)

Kansas City Chiefs tight end Sean McGrath (84) celebrates with tight end Dominique Jones (46) after scoring on a 6-yard touchdown reception from quarterback Alex Smith during the third quarter of an NFL football game in Oakland, Calif., Sunday, Dec. 15, 2013. (AP Photo/Ben Margot)

Kansas City Chiefs running back Jamaal Charles (25) celebrates after scoring on a 39-yard touchdown reception with guard Geoff Schwartz, left, quarterback Alex Smith, rear, and wide receiver Donnie Avery against the Oakland Raiders during the first quarter of an NFL football game in Oakland, Calif., Sunday, Dec. 15, 2013. (AP Photo/Marcio Jose Sanchez)

Kansas City Chiefs running back Jamaal Charles, right, celebrates with quarterback Alex Smith (11) after they connected on a 16-yard touchdown pass against the Oakland Raiders during the second quarter of an NFL football game in Oakland, Calif., Sunday, Dec. 15, 2013. (AP Photo/Marcio Jose Sanchez)

Kansas City Chiefs running back Jamaal Charles (25) runs against Oakland Raiders cornerback Charles Woodson during the second quarter of an NFL football game in Oakland, Calif., Sunday, Dec. 15, 2013. (AP Photo/Ben Margot)

Oakland Raiders running back Rashad Jennings (27) scores on a 1-yard touchdown run past Kansas City Chiefs cornerback Sean Smith during the second quarter of an NFL football game in Oakland, Calif., Sunday, Dec. 15, 2013. (AP Photo/Marcio Jose Sanchez)

Kansas City Chiefs head coach Andy Reid, left, greets running back Jamaal Charles (25) on the sideline during the second quarter of an NFL football game against the Oakland Raiders in Oakland, Calif., Sunday, Dec. 15, 2013. (AP Photo/Marcio Jose Sanchez)

Kansas City Chiefs quarterback Alex Smith (11) runs against Oakland Raiders linebacker Nick Roach (53) during the second quarter of an NFL football game in Oakland, Calif., Sunday, Dec. 15, 2013. (AP Photo/Marcio Jose Sanchez)

Kansas City Chiefs strong safety Eric Berry (29) runs after intercepting Oakland Raiders quarterback Matt McGloin (14) during the second quarter of an NFL football game in Oakland, Calif., Sunday, Dec. 15, 2013. (AP Photo/Marcio Jose Sanchez)

Kansas City Chiefs running back Jamaal Charles (25) runs toward the end zone to score on a 49-yard touchdown reception against the Oakland Raiders during the first quarter of an NFL football game in Oakland, Calif., Sunday, Dec. 15, 2013. (AP Photo/Jeff Chiu)

Oakland Raiders running back Rashad Jennings dives for a 1-yard touchdown against Kansas City Chiefs inside linebacker Akeem Jordan (55) during the second quarter of an NFL football game in Oakland, Calif., Sunday, Dec. 15, 2013. (AP Photo/Ben Margot)

Oakland Raiders quarterback Terrelle Pryor (2) runs against Kansas City Chiefs inside linebacker Akeem Jordan (55) during the second quarter of an NFL football game in Oakland, Calif., Sunday, Dec. 15, 2013. Jordan was called for a face mask penalty on the play. (AP Photo/Ben Margot)

Kansas City Chiefs strong safety Eric Berry, top right, celebrates with defensive back Husain Abdullah (39) after returning an interception by Oakland Raiders quarterback Matt McGloin for a 47-yard touchdown during the first quarter of an NFL football game in Oakland, Calif., Sunday, Dec. 15, 2013. (AP Photo/Marcio Jose Sanchez)

Oakland Raiders fans pose for a photo before the NFL regular season game between the Kansas City Chiefs and the Oakland Raiders on Sunday, Dec. 15, 2013 at the O.co Coliseum in Oakland, Calif. (Ric Tapia/NFL)