The Minnesota Vikings mascot Ragnar celebrates with running back Matt Asiata after a touchdown against the Philadelphia Eagles. (AP Photo/Ann Heisenfelt)

Oakland Raiders fan who calls himself "Violator" poses for photographs in the O.co Coliseum parking lot before a game against the Kansas City Chiefs. (AP Photo/Marcio Jose Sanchez)

Washington Redskins running back Alfred Morris (46) is stopped by Atlanta Falcons outside linebacker Paul Worrilow (55) and other Atlanta Falcons. (AP Photo/David Goldman)

Matt Flynn celebrates a score during the Green Bay Packers' comeback for a win over the Dallas Cowboys. (Aaron M. Sprecher/NFL)

Tampa Bay Buccaneers wide receiver Vincent Jackson leaps as he is introduced. (AP Photo/Chris O'Meara)

San Diego Chargers receiver Keenan Allen hurdles a Denver Broncos defender during his team's win on "Thursday Night Football". (Ric Tapia/NFL)

Green Bay Packers running back Eddie Lacy jumps over the line of scrimmage to land in the end zone for the go-ahead touchdown in a 37-36 win over the Dallas Cowboys. (AP Photo/Tony Gutierrez)

New Orleans Saints quarterback Drew Brees throws under pressure from St. Louis Rams defensive end Robert Quinn. (AP Photo/Charles Rex Arbogast)

San Francisco 49ers tight end Vernon Davis crashes into the wall after pulling in a 52-yard touchdown reception against the Tampa Bay Buccaneers. (AP Photo/Brian Blanco)

Fans throw liquids at Kansas City Chiefs running back Jamaal Charles (25) as he celebrates with tight end Sean McGrath (84) after scoring on a 39-yard touchdown reception. (AP Photo/Marcio Jose Sanchez)