Pittsburgh Steelers cornerback Bryant McFadden (20) and safety Ryan Clark (25) break up a pass intended for Baltimore Ravens wide receiver T.J. Houshmandzadeh (84) during the second half of an NFL football game, Sunday, Dec. 5, 2010, in Baltimore. The Steelers won 13-10. (AP Photo/Nick Wass)

New England Patriots cornerback Darius Butler, left, tries unsuccessfully to grab the ball on an interception attempt as New York Jets wide receiver Santonio Holmes, right, hits the turf during the first quarter of an NFL football game, Monday, Dec. 6, 2010, in Foxborough, Mass. (AP Photo/Charles Krupa)

San Diego Chargers wide receiver Seyi Ajirotutu makes a catch for a gain of 25 yards as Oakland Raiders cornerback Stanford Routt looks on during their NFL football game Sunday, Dec. 5, 2010, in San Diego. (AP Photo/Denis Poroy)

Green Bay Packers safety Charlie Peprah (26) tackles San Francisco 49ers tight end Vernon Davis (85) after a catch during the second half of an NFL football game Sunday, Dec. 5, 2010, in Green Bay, Wis. The Packers won 34-16. (AP Photo/Mike Roemer)

San Diego Chargers fullback Mike Tolbert is brought down by Oakland Raiders linebacker Kamerion Wimbley in the first half of their NFL football game Sunday, Dec. 5, 2010, in San Diego. (AP Photo/Lenny Ignelzi)

Carolina Panthers, Garry Williams, left, and quarterback Jimmy Clausen, right, congratulate Jonathan Stewart (28) after he scores a touchdown against the Seattle Seahawks in the first half of an NFL football game, Sunday, Dec. 5, 2010 in Seattle. (AP Photo/Elaine Thompson)

Cincinnati Bengals running back Cedric Benson (32) scores on a 4-yard touchdown run in the second half of an NFL football game, Sunday, Dec. 5, 2010, in Cincinnati. New Orleans won 34-30. (AP Photo/Tom Uhlman)

St. Louis Rams safety Oshiomogho Atogwe (21) tackles Arizona Cardinals running back Tim Hightower, right, during the first quarter of an NFL football game Sunday, Dec. 5, 2010, in Glendale, Ariz. (AP Photo/Matt York)

Dallas Cowboys wide receiver Roy E. Williams, right, is tackled by Indianapolis Colts cornerback Jacob Lacey in the first quarter of an NFL football game in Indianapolis, Sunday, Dec. 5, 2010. (AP Photo/Darron Cummings)

Dallas Cowboys cornerback Alan Ball , rleft, intercepts a pass intended for Indianapolis Colts wide receiver Reggie Wayne, center, as cornerback Mike Jenkins celebrates in the first quarter of an NFL football game in Indianapolis, Sunday, Dec. 5, 2010. (AP Photo/Darron Cummings)

New Orleans Saints running back Chris Ivory (29) scores on a one-yard run in the second half of an NFL football game against the Cincinnati Bengals, Sunday, Dec. 5, 2010, in Cincinnati. New Orleans won 34-30. (AP Photo/David Kohl)

Washington Redskins safety Kareem Moore (41) tackles New York Giants tight end Kevin Boss (89) during the third quarter of an NFL football game at New Meadowlands Stadium, Sunday, Dec. 5, 2010, in East Rutherford, N.J. The Giants won the game 31-7. (AP Photo/Kathy Willens)

Kansas City Chiefs tight end Leonard Pope (45) catches a touchdown pass during the first half of an NFL football game against the Denver Broncos at Arrowhead Stadium in Kansas City, Mo., Sunday, Dec. 5, 2010. (AP Photo/Orlin Wagner)

Kansas City Chiefs safety Eric Berry (29) breaks up a pass intended for Denver Broncos wide receiver Brandon Lloyd (84) during the first half of an NFL football game at Arrowhead Stadium in Kansas City, Mo., Sunday, Dec. 5, 2010. (AP Photo/Ed Zurga)

Cincinnati Bengals running back Bernard Scott (28) has his helmet grabbed by New Orleans Saints linebacker Jonathan Vilma in the first half of an NFL football game, Sunday, Dec. 5, 2010, in Cincinnati. Tight end Reggie Kelly (82) blocks Vilma. (AP Photo/Al Behrman)

Chicago Bears running back Chester Taylor (29) avoids a tackle by Detroit Lions linebacker Ashlee Palmer (58) to score during the first quarter of an NFL football game at Ford Field in Detroit, Sunday, Dec. 5, 2010. (AP Photo/Carlos Osorio)

Houston Texans wide receiver Jacoby Jones (12) pulls in a touchdown pass as Philadelphia Eagles cornerback Brandon Hughes (24) defends in the first half of an NFL football game, Thursday, Dec. 2, 2010 in Philadelphia. (AP Photo/Miles Kennedy)

Houston Texans' Matt Schaub (8) is sacked by Philadelphia Eagles' Mike Patterson in the second half of an NFL football game Thursday, Dec. 2, 2010, in Philadelphia. Philadelphia won 34-24. (AP Photo/Michael Perez)

Houston Texans running back Arian Foster (23) runs in for a touchdown against the Philadelphia Eagles at Lincoln Financial Field in Philadelphia, Pennsylvania on Dec. 2, 2010. (Aaron M. Sprecher/NFL)

Baltimore Ravens linebacker Terrell Suggs (55) celebrates after sacking Pittsburgh Steelers quarterback Ben Roethlisberger during the first half of an NFL football game, Sunday, Dec. 5, 2010, in Baltimore. (AP Photo/Rob Carr)

Dallas Cowboys running back Felix Jones, right, flips and is tackled by Indianapolis Colts linebacker Tyjuan Hagler in the second half of an NFL football game in Indianapolis, Sunday, Dec. 5, 2010. The Cowboys defeated the Colts 38-35 in overtime. (AP Photo/Michael Conroy)

San Diego Chargers quarterback Philip Rivers (17) is sacked by Oakland Raiders Michael Huff (24) and Tommy Kelly (93) during the first quarter of an NFL football game Sunday, Dec. 5, 2010, in San Diego. The Raiders won 28-13. (AP Photo/Denis Poroy)

Atlanta Falcons wide receiver Michael Jenkins (12) celebrates after getting by Tampa Bay Buccaneers safety Corey Lynch (41) and cornerback Myron Lewis (23) to score a fourth-quarter touchdown during an NFL football game Sunday, Dec. 5, 2010, in Tampa, Fla. (AP Photo/Chris O'Meara)

Dallas Cowboys tight end Jason Witten, right, scores on a two-yard pass in front of Indianapolis Colts safety Antoine Bethea in the fourth quarter of an NFL football game in Indianapolis, Sunday, Dec. 5, 2010. The Cowboys defeated the Colts 38-35 in overtime. (AP Photo/Michael Conroy)

Dallas Cowboys place kicker David Buehler celebrates as he leaves the field after kicking the winning field goal in overtime against the Indianapolis Colts in an NFL football game in Indianapolis, Sunday, Dec. 5, 2010. The Cowboys defeated the Colts 38-35 in overtime. (AP Photo/Michael Conroy)

San Diego Chargers wide receiver Malcom Floyd, left, reaches for a catch as Oakland Raiders safety Michael Huff defends in the second half of their NFL football game Sunday, Dec. 5, 2010, in San Diego. The play was ruled as an incomplete catch. (AP Photo/Denis Poroy)

Oakland Raiders safety Michael Huff, left, brings down San Diego Chargers tight end Antonio Gates in the second half during their NFL football game Sunday, Dec. 5, 2010, in San Diego. (AP Photo/Lenny Ignelzi)

Chicago Bears wide receiver Earl Bennett (80) is tackled by Detroit Lions safety Louis Delmas (26) in the second half of the NFL football game in Detroit, Sunday , Dec. 5, 2010. Chicago won 24-20. (AP Photo/Rick Osentoski)

Tampa Bay Buccaneers running back LeGarrette Blount (27) gets flipped over by Atlanta Falcons' Brent Grimes (20) during a second-quarter run in an NFL football game Sunday, Dec. 5, 2010, in Tampa, Fla. (AP Photo/Margaret Bowles)

Chicago Bears tight end Greg Olsen (82) is tackled by Detroit Lions linebacker Landon Johnson (55) in the second half of the NFL football game against the Detroit Lions in Detroit, Sunday , Dec. 5, 2010. Chicago won 24-20. (AP Photo/Rick Osentoski)

Buffalo Bills safety George Wilson (37) tackles Minnesota Vikings running back Albert Young (34) during the second half of an NFL football game on Sunday, Dec. 5, 2010, in Minneapolis. Vikings won 38-14. (AP Photo/Hannah Foslien)

New York Giants running back Ahmad Bradshaw (44) is surrounded by Redskins defenders during the third quarter of an NFL football game between the Washington Redskins and the New York Giants at New Meadowlands Stadium Sunday, Dec. 5, 2010, in East Rutherford, N.J. (AP Photo/Kathy Willens)

Buffalo Bills' Naaman Roosevelt (18) collides with Minnesota Vikings' Greg Camarillo (85) while trying to stop him on a punt-return during the second quarter of a football game in Minneapolis Sunday, Dec. 5, 2010. The Vikings defated the Bills 38-14. (AP Photo/Ann Heisenfelt)

Green Bay Packers quarterback Aaron Rodgers (12) is tripped up by San Francisco 49ers cornerback Nate Clements (22) after a first down run during the second half of an NFL football game Sunday, Dec. 5, 2010, in Green Bay, Wis. The Packers won 34-16. (AP Photo/Jeffrey Phelps)

Baltimore Ravens safety Dawan Landry (26) upends Pittsburgh Steelers tight end David Johnson during the first half of an NFL football game, Sunday, Dec. 5, 2010, in Baltimore. (AP Photo/Nick Wass)