Chicago Bears' Corey Wootton (98) tackles Minnesota Vikings quarterback Brett Favre (4) during the first half an NFL football game Monday, Dec. 20, 2010, in Minneapolis. Favre was injured on the play. The game is being played at the University of Minnesota's TCF Bank Stadium because of damage to the Metrodome roof. (AP Photo/Andy King)

Minnesota Vikings' Sidney Rice is tackled by Chicago Bears' Chris Harris (46) and Charles Tillman (33) during the first half an NFL football game Monday, Dec. 20, 2010, in Minneapolis. The game is being played at the University of Minnesota's TCF Bank Stadium because of damage to the Metrodome roof. (AP Photo/Ann Heisenfelt)

Chicago Bears' Brian Urlacher (54) looks down as Minnesota Vikings quarterback Brett Favre (4) lays on the ground after being hit during the first half an NFL football game Monday, Dec. 20, 2010, in Minneapolis. The game is being played at the University of Minnesota's TCF Bank Stadium because of damage to the Metrodome roof. (AP Photo/Andy King)

San Diego Chargers wide receiver Vincent Jackson, left, makes a catch on his way to a touchdown as San Francisco 49ers cornerback Nate Clements defends in the first quarter during an NFL football game, Thursday, Dec. 16, 2010, in San Diego. (AP Photo/Denis Poroy)

Philadelphia Eagles quarterback Michael Vick looks for a receiver during the first quarter of an NFL football game against the New York Giants at New Meadowlands Stadium, Sunday, Dec. 19, 2010, in East Rutherford, N.J. (AP Photo/Kathy Willens)

Carolina Panthers' Steve Smith (89) catches a pass as Arizona Cardinals' Dominique Rodgers-Cromartie (29) defends in the first half of an NFL football game in Charlotte, N.C., Sunday, Dec. 19, 2010. Smith was ruled out of bounds on the play. (AP Photo/Chuck Burton)

New Orleans Saints tight end Jimmy Graham (80) dives over the goal line for a touchdown under pressure from Baltimore Ravens safety Dawan Landry during the first half of an NFL football game in Baltimore, Sunday, Dec. 19, 2010. (AP Photo/Nick Wass)

New York Giants' Brandon Jacobs, left, is tackled by Philadelphia Eagles' Antonio Dixon during the first quarter of an NFL football game at New Meadowlands Stadium, Sunday, Dec. 19, 2010, in East Rutherford, N.J. (AP Photo/Bill Kostroun)

San Francisco 49ers wide receiver Josh Morgan makes a catch as San Diego Chargers safety Steve Gregory defends in the second quarter during an NFL football game, Thursday, Dec. 16, 2010, in San Diego. (AP Photo/Denis Poroy)

San Diego Chargers wide receiver Kelley Washington (87) runs the ball against the defense of San Francisco 49ers cornerback Nate Clements (22) at Qualcomm Stadium in San Diego, California on Dec. 16, 2010. (Ben Liebenberg/NFL)

Baltimore Ravens running back Ray Rice carries the ball during the first half of an NFL football game against the New Orleans Saints in Baltimore, Sunday, Dec. 19, 2010. (AP Photo/Gail Burton)

Detroit Lions wide receiver Nate Burleson (13) celebrates with teammate running back Maurice Morris (28) after a touchdown during an NFL football game against the Tampa Bay Buccaneers Sunday, Dec. 19, 2010, in Tampa, Fla. (AP Photo/Chris O'Meara)

Indianapolis Colts running back Donald Brown, left, is tackled by Jacksonville Jaguars cornerback Rashean Mathis, bottom and linebacker Kirk Morrison in the first quarter of an NFL football game in Indianapolis, Sunday, Dec. 19, 2010. (AP Photo/Michael Conroy)

Indianapolis Colts quarterback Peyton Manning (18) throws a pass during the second quarter of an NFL football game against the Jacksonville Jaguars in Indianapolis, Sunday, Dec. 19, 2010. (AP Photo/Darron Cummings)

Indianapolis Colts wide receiver Austin Collie, left, celebrates with punter Pat McAfee after scoring a touchdown in the first quarter of an NFL football game in Indianapolis, Sunday, Dec. 19, 2010. (AP Photo/Darron Cummings)

New York Giants' Hakeem Nicks, left, catches a touchdown pass past Philadelphia Eagles' Dimitri Patterson during the second quarter of an NFL football game at New Meadowlands Stadium, Sunday, Dec. 19, 2010, in East Rutherford, N.J. (AP Photo/Kathy Willens)

Arizona Cardinals' Tim Hightower (34) runs against the Carolina Panthers in the first half of an NFL football game in Charlotte, N.C., Sunday, Dec. 19, 2010. (AP Photo/Chuck Burton)

Carolina Panthers' David Gettis, right, catches a pass as Arizona Cardinals' Rashad Johnson (49) in the first half of an NFL football game in Charlotte, N.C., Sunday, Dec. 19, 2010. (AP Photo/Mike McCarn)

Carolina Panthers' David Gettis (12) catches a pass as Arizona Cardinals' Greg Toler (28) defends in the first half of an NFL football game in Charlotte, N.C., Sunday, Dec. 19, 2010. (AP Photo/Chuck Burton)

Baltimore Ravens tight end Ed Dickson rolls through the end zone under pressure from New Orleans Saints cornerback Jabari Greer after scoring a touchdown during the first half of an NFL football game in Baltimore, Sunday, Dec. 19, 2010. (AP Photo/Nick Wass)

Indianapolis Colts wide receiver Austin Collie, left, runs through the end zone after scoring a touchdown in the second quarter of an NFL football game against the Jacksonville Jaguars in Indianapolis, Sunday, Dec. 19, 2010. (AP Photo/AJ Mast)

St. Louis Rams cornerback Kevin Dockery intercepts a pass intended for Kansas City Chiefs tight end Tony Moeaki, right, as Chiefs wide receiver Dwayne Bowe, left, looks on during the first quarter of an NFL football game Sunday, Dec. 19, 2010, in St. Louis. (AP Photo/Jeff Roberson)

St. Louis Rams place kicker Josh Brown celebrates after making a 52-yard field goal during the first quarter of an NFL football game against the Kansas City Chiefs, Sunday, Dec. 19, 2010, in St. Louis. (AP Photo/Seth Perlman)

New York Giants' Mario Manningham, right, scores a touchdown past Philadelphia Eagles' Jamar Chaney during the second quarter of the NFL football game at New Meadowlands Stadium, Sunday, Dec. 19, 2010, in East Rutherford, N.J. (AP Photo/Kathy Willens)

Baltimore Ravens running back Ray Rice (27) celebrates his touchdown-run during the first half of an NFL football game against the New Orleans Saints in Baltimore, Sunday, Dec. 19, 2010. (AP Photo/Nick Wass)

Tampa Bay Buccaneers running back LeGarrette Blount (27) outruns the Detroit Lions defense, including Lions linebacker Julian Peterson (98) to score on a 39-yard run during the second quarter of an NFL football game Sunday, Dec. 19, 2010, in Tampa, Fla. (AP Photo/Margaret Bowles)

Houston Texans running back Arian Foster (23) leaps over players as he escapes from Tennessee Titans linebacker Stephen Tulloch (55) in the first quarter of an NFL football game on Sunday, Dec. 19, 2010, in Nashville, Tenn. (AP Photo/Joe Howell)

St. Louis Rams running back Steven Jackson, left, runs for a three-yard gain as Rams offensive tackle Jason Smith, center, blocks Kansas City Chiefs defensive tackle Shaun Smith, right, during the first quarter of an NFL football game Sunday, Dec. 19, 2010, in St. Louis. (AP Photo/Seth Perlman)

Jacksonville Jaguars running back Rashad Jennings, center, is tackled by Indianapolis Colts linebacker Tyjuan Hagler, left, and cornerback Jacob Lacey in the first quarter of an NFL football game in Indianapolis, Sunday, Dec. 19, 2010. (AP Photo/Michael Conroy)

Dallas Cowboys safety Gerald Sensabaugh intercepts the ball against the Washington Redskins during the first half an NFL football game, Sunday, Dec. 19, 2010 in Arlington, Texas. (AP Photo/Tim Sharp)

Indianapolis Colts running back Donald Brown, left, holds off Jacksonville Jaguars safety Sean Considine on his way to a 49-yard gain in the first quarter of an NFL football game in Indianapolis, Sunday, Dec. 19, 2010. (AP Photo/Michael Conroy)

Indianapolis Colts cornerback Justin Tryon, left, breaks up a pass intended for Jacksonville Jaguars wide receiver Mike Sims-Walker in the first quarter of an NFL football game in Indianapolis, Sunday, Dec. 19, 2010. (AP Photo/AJ Mast)

Green Bay Packers wide receiver James Jones, left, passes New England Patriots safety James Sanders, right, to score a touchdown during the second quarter of an NFL football game in Foxborough, Mass., Sunday Dec. 19, 2010. (AP Photo/Charles Krupa)

Pittsburgh Steelers wide receiver Mike Wallace (17) dives for more yardage after making a catch for a first down past New York Jets cornerback Antonio Cromartie (31) in the Steelers' final drive of an NFL football game in Pittsburgh, Sunday, Dec. 19, 2010. The Jets won 22-17. (AP Photo/Keith Srakocic)

Seattle Seahawks quarterback Matt Hasselbeck (8) is sacked by Atlanta Falcons' Jamaal Anderson and fumbles the ball in the end zone in the second half of an NFL football game, Sunday, Dec. 19, 2010, in Seattle. The Falcons recovered in the end zone for a touchdown and won the game 34-18. (AP Photo/Elaine Thompson)

Denver Broncos quarterback Tim Tebow (15) is sacked by Oakland Raiders defensive tackle Tommy Kelly (93) and defensive end Matt Shaughnessy, right, in the first quarter of an NFL football game in Oakland, Calif., Sunday, Dec. 19, 2010. (AP Photo/Ben Margot)

Denver Broncos running back Lance Ball (35) is tackled by Oakland Raiders defensive tackle Tommy Kelly (93), defensive end Lamarr Houston (99), and linebacker Rolando McClain (55) in the fourth quarter of an NFL football game in Oakland, Calif., Sunday, Dec. 19, 2010. (AP Photo/Marcio Jose Sanchez)

Dallas Cowboys wide receiver Sam Hurd (17) and Washington Redskins cornerback Phillip Buchanon (31) during an NFL football game, Sunday, Dec. 19, 2010 in Arlington, Texas. (AP Photo/Sharon Ellman)