The Cardinals' Beanie Wells warms up with other players prior to a game against the Cowboys at University of Phoenix Stadium.

Buccaneers receiver Arrelious Benn has his facemask grabbed by a Panthers player.

Bengals tight end Jermaine Gresham makes a catch for a first down under coverage by Steelers safety Ryan Clark.

49ers wide receiver Kyle Williams celebrates after scoring on a 56-yard touchdown pass.

Bears wide receiver Roy Williams (11) bobbles the ball near the end zone. Chiefs safety Jon McGraw intercepted the ball on the play.

Browns tight end Benjamin Watson (82) misses a catch and then gets a face full of mud and painted turf at Cleveland Browns Stadium.

The Cardinals' LaRod Stephens-Howling celebrates his game-winning touchdown run against the Cowboys.

Panthers quarterback Cam Newton dives over the Buccaneers' defense to score a 1-yard touchdown.

The Vikings' Jared Allen loses his helmet while attempting to get after Broncos QB Tim Tebow.

49ers offensive tackle Joe Staley dumps Gatorade on coach Jim Harbaugh as the team clinches its first playoff berth since 2002.