Carolina Panthers wide receiver Steve Smith cuts behind a block after catching a ,pass against the San Diego Chargers during the second half of a NFL football game Sunday, Dec. 16, 2012, in San Diego. (AP Photo/Gregory Bull)

San Diego Chargers quarterback Philip Rivers warms up before an NFL football game against the Carolina Panthers, Sunday, Dec. 16, 2012, in San Diego. (AP Photo/Denis Poroy)

Carolina Panthers quarterback Cam Newton is seen prior to start of the NFL football game against the San Diego Chargers Sunday, Dec. 16, 2012, in San Diego. (AP Photo/Gregory Bull)

Carolina Panthers quarterback Cam Newton escapes the rush of San Diego Chargers inside linebacker Donald Butler during the first half of a NFL football game Sunday, Dec. 16, 2012, in San Diego. (AP Photo/Lenny Ignelzi)

A wall of Carolina Panthers blockers free running back DeAngelo Williams for a gain against the San Diego Chargers during the first half of a NFL football game Sunday, Dec. 16, 2012, in San Diego. (AP Photo/Lenny Ignelzi)

Carolina Panthers quarterback Cam Newton fires a pass during the first half of a NFL football game against the San Diego Chargers Sunday, Dec. 16, 2012, in San Diego. (AP Photo/Gregory Bull)

Carolina Panthers fullback Mike Tolbert sails over the top of the San Diego Chargers defense to score a touchdown during the first half of a NFL football game Sunday, Dec. 16, 2012, in San Diego. (AP Photo/Denis Poroy)

San Diego Chargers quarterback Philip Rivers fumbles the ball while trying to throw a pass against the Carolina Panthers during the first half of a NFL football game Sunday, Dec. 16, 2012, in San Diego. The Panthers recovered he fumble. (AP Photo/Gregory Bull)

San Diego Chargers quarterback Philip Rivers loses the battle for the fumbled ball with Carolina Panthers defensive tackle Nate Chandler during the first half of a NFL football game Sunday, Dec. 16, 2012, in San Diego. (AP Photo/Gregory Bull)

Carolina Panthers fullback Mike Tolbert sails into the end zone untouched while scoring his second touchdown against the San Diego Chargers during the first half of a NFL football game Sunday, Dec. 16, 2012, in San Diego. (AP Photo/Gregory Bull)

San Diego Chargers quarterback Philip Rivers aims a pass against the Carolina Panthers during the first half of a NFL football game Sunday, Dec. 16, 2012, in San Diego. (AP Photo/Denis Poroy)

Carolina Panthers quarterback Cam Newton throws on the run as he is pursued by San Diego Chargers defensive end Corey Liuget during the first half of a NFL football game Sunday, Dec. 16, 2012, in San Diego. (AP Photo/Denis Poroy)

San Diego Chargers quarterback Philip Rivers throws a pass against the Carolina Panthers during the first half of a NFL football game Sunday, Dec. 16, 2012, in San Diego. (AP Photo/Denis Poroy)

Carolina Panthers running back DeAngelo Williams escapes from San Diego Chargers linebacker Gary Guyton on his way to a 45 yard touchdown reception during the first half of a NFL football game Sunday, Dec. 16, 2012, in San Diego. (AP Photo/Denis Poroy)

Carolina Panthers running back DeAngelo Williams cruises into the end zone with a touchdown behind the blocks of two teammates against the San Diego Chargers during the first half of a NFL football game Sunday, Dec. 16, 2012, in San Diego. (AP Photo/Denis Poroy)

Carolina Panthers running back DeAngelo Williams celebrates as the referee indicates touchdown after his 45 yard reception against the San Diego Chargers during the first half of a NFL football game Sunday, Dec. 16, 2012, in San Diego. (AP Photo/Gregory Bull)

Carolina Panthers running back DeAngelo Williams cruises into the end zone with a 45 yard touchdown reception against the San Diego Chargers during the first half of a NFL football game Sunday, Dec. 16, 2012, in San Diego. (AP Photo/Gregory Bull)

San Diego Chargers' Quentin Jammer and Eric Weddle watch as Carolina Panthers' DeAngelo Williams(34) and Cam Newton(1) celebrate their 45 yard touchdown pass during the first half of a NFL football game Sunday, Dec. 16, 2012, in San Diego. (AP Photo/Gregory Bull)

Carolina Panthers running back DeAngelo Williams breaks tackles on his way to a 45 yard touchdown reception against the San Diego Chargers during the first half of an NFL football game Sunday, Dec. 16, 2012, in San Diego. (AP Photo/Gregory Bull)

San Diego Chargers tight end Antonio Gates grabs a touchdown pass against the Carolina Panthers in the second half during an NFL football game Sunday, Dec. 16, 2012, in San Diego. (AP Photo/Gregory Bull)

San Diego Chargers wides receiver Malcolm Floyd, left, hauls in a pass as Carolina Panthers cornerback James Dockery defends during the second half of an NFL football game Sunday, Dec. 16, 2012, in San Diego. (AP Photo/Gregory Bull)

San Diego Chargers coach Norv Turner shouts instructions while his team falls quickly behind the Carolina Panthers during the first half of a NFL football game Sunday, Dec. 16, 2012, in San Diego. The Chargers lost 31-7. (AP Photo/Denis Poroy)

Carolina Panthers quarterback Cam Newton gestures after beating the San Diego Chargers in an NFL football game Sunday, Dec. 16, 2012, in San Diego. The Panthers won, 31-7. (AP Photo/Gregory Bull)

Carolina Panthers defensive end Greg Hardy (76) celebrates after sacking San Diego Chargers quarterback Philip Rivers as teammate Sione Fua, left, looks on during the second half of an NFL football game Sunday, Dec. 16, 2012, in San Diego. (AP Photo/Gregory Bull)

San Diego Chargers head coach Norv Turner, left, shakes hands with Carolina Panthers head coach Ron Rivera after an NFL football game Sunday, Dec. 16, 2012 in San Diego. The Panthers won 31-7. (AP Photo/Denis Poroy)