New England Patriots tight end Rob Gronkowski celebrates his first-down reception during the first half of an NFL football game against the Washington Redskins, Sunday, Dec. 11, 2011, in Landover, Md. (AP Photo/Rich Lipski)

Oakland Raiders wide receiver Louis Murphy (18) is stopped by Green Bay Packers strong safety Charlie Peprah (26) and free safety Morgan Burnett (42) during an NFL football game on Sunday, Dec. 11, 2011, in Green Bay, Wis. (Todd Rosenberg/NFL)

Chicago Bears running back Marion Barber (24) is tackled by Denver Broncos strong safety Brian Dawkins (20), defensive end Robert Ayers (91) and middle linebacker Joe Mays (51) in the first quarter of an NFL football game, Sunday, Dec. 11, 2011, in Denver. (AP Photo/Jack Dempsey)

Atlanta Falcons' Julio Jones (11) dives into the end zone for a touchdown as Carolina Panthers' Darius Butler (27) defends during the fourth quarter of Falcons' 31-23 win in an NFL football game in Charlotte, N.C., Sunday, Dec. 11, 2011. (AP Photo/Bob Leverone)

Green Bay Packers' D.J. Smith (51) intercepts a pass in front of Oakland Raiders' Darrius Heyward-Bey (85) during the first half of an NFL football game Sunday, Dec. 11, 2011, in Green Bay, Wis. (AP Photo/Mike Roemer)

Carolina Panthers' Steve Smith, top, catches a pass as Atlanta Falcons' Dunta Robinson, bottom, defends during the fourth quarter of Falcons' 31-23 win in an NFL football game in Charlotte, N.C., Sunday, Dec. 11, 2011. (AP Photo/Nell Redmond)

Green Bay Packers' Ryan Grant (25) is tripped up by Oakland Raiders' Lito Sheppard during the first half of an NFL football game Sunday, Dec. 11, 2011, in Green Bay, Wis. (AP Photo/Mike Roemer)

Minnesota Vikings quarterback Joe Webb (14) reaches for the end zone while being knocked out of bounds against the Detroit Lions in the fourth quarter of an NFL football game in Detroit, Sunday, Dec. 11, 2011. Detroit won 34-28. (AP Photo/Paul Sancya)

Oakland Raiders running back Michael Bush (29) is tackled by Green Bay Packers' Erik Walden during the first half of an NFL football game Sunday, Dec. 11, 2011, in Green Bay, Wis. (AP Photo/Mike Roemer)

Denver Broncos quarterback Tim Tebow (15) prays in the end zone before the start of an NFL football game against the Chicago Bears, Sunday, Dec. 11, 2011, in Denver. (AP Photo/Julie Jacobson)

Washington Redskins cornerback Josh Wilson (26) intercepts against New England Patriots wide receiver Tiquan Underwood (10) during the second half of an NFL football game on Sunday, Dec., 11, 2011, in Landover, Md. Patriots won 34-27. (AP Photo/Pablo Martinez Monsivais)

Oakland Raiders quarterback Carson Palmer (3) tackles Green Bay Packers linebacker D.J. Smith (51) after Smith intercepted a pass during the first half of an NFL football game Sunday, Dec. 11, 2011, in Green Bay, Wis. (AP Photo/Morry Gash)

RETRANSMITTED FOR IMPROVED TONING - Detroit Lions defensive back Alphonso Smith (27) celebrates his 30-yard interception for a touchdown with defensive back Aaron Berry (32) as teammate Chris Harris (43) looks on during the second quarter of an NFL football game against the Minnesota Vikings in Detroit, Sunday, Dec. 11, 2011. (AP Photo/Paul Sancya)

Carolina Panthers' Cam Newton (1) tries to flip the ball to Jonathan Stewart (28) during the third quarter of an NFL football game against the Atlanta Falcons in Charlotte, N.C., Sunday, Dec. 11, 2011. The Falcons intercepted the pass. (AP Photo/Bob Leverone)

New York Jets' Shonn Greene gets his hand on the ball before running out of bounds during the second quarter of the NFL football game against the Kansas City Chiefs on Sunday, Dec. 11, 2011, in East Rutherford, N.J. (AP Photo/Kathy Willens)

December 11, 2011; Jacksonville FL, USA; Tampa Bay Buccaneers defensive end Adrian Clayborn (94) sacks Jacksonville Jaguars quarterback Blaine Gabbert (11) during the first quarter at Jacksonville EverBank Field. Mandatory Credit: Kim Klement-US PRESSWIRE

New Orleans Saints tight end Jimmy Graham, top, is hit by Tennessee Titans safety Chris Hope, bottom, in the second quarter of an NFL football game on Sunday, Dec. 11, 2011, in Nashville, Tenn. (AP Photo/Frederick Breedon)

Jacksonville Jaguars running back Maurice Jones-Drew (32) dives for a touchdown under the tackle of Tampa Bay Buccaneers defensive back E.J. Biggers (31) during the first half of an NFL football game on Sunday, Dec. 11, 2011, in Jacksonville, Fla. (AP Photo/Stephen Morton)

Miami Dolphins wide receiver Davone Bess (15) fumbles the ball under pressure from Philadelphia Eagles cornerback Asante Samuel (22) during the first half of an NFL football game on Sunday, Dec. 11, 2011, in Miami. Samuel's recovered the ball. (AP Photo/Wilfredo Lee)

December 8, 2011; Pittsburgh,PA, USA: Pittsburgh Steelers defensive back William Gay (22) intercepts a pass in the end-zone intended for Cleveland Browns receiver Mohamed Massaquoi (11) during the fourth quarter at Heinz Field. The Steelers won 14-3. Mandatory Credit: Charles LeClaire-USPRESSWIRE

Tampa Bay Buccaneers wide receiver Mike Williams (19) can't make the catch as Jacksonville Jaguars defensive back Kevin Rutland (22) closes in during the first half of an NFL football game in Jacksonville, Fla., on Sunday, Dec. 11, 2011. (AP Photo/Phelan M. Ebenhack)

Philadelphia Eagles running back LeSean McCoy (25) leaps into the end zone for a touchdown during the first half of an NFL football game against the Miami Dolphins, Sunday, Dec. 11, 2011, in Miami. (AP Photo/Lynne Sladky)

Carolina Panthers' Steve Smith (89) catches a pass as Atlanta Falcons' Dunta Robinson (23) defends during the first quarter of an NFL football game in Charlotte, N.C., Sunday, Dec. 11, 2011. (AP Photo/Bob Leverone)

Baltimore Ravens running back Ray Rice, left, rushes past Indianapolis Colts cornerback Jacob Lacey in the first half of an NFL football game in Baltimore, Sunday, Dec. 11, 2011. (AP Photo/Nick Wass)

Atlanta Falcons' Roddy White (84) catches a touchdown pass against the Carolina Panthers during the first quarter of an NFL football game in Charlotte, N.C., Sunday, Dec. 11, 2011. (AP Photo/Bob Leverone)

Tampa Bay Buccaneers running back Kregg Lumpkin (28) is brought down by Jacksonville Jaguars defensive back Drew Coleman (30) and free safety Dawan Landry during the first half of an NFL football game on Sunday, Dec. 11, 2011, in Jacksonville, Fla. (AP Photo/Phelan M. Ebenhack)

Philadelphia Eagles punter Chas Henry's (8) punt is blocked as Miami Dolphins cornerback Jimmy Wilson (27) raises a hand during the first half of an NFL football game on Sunday, Dec. 11, 2011, in Miami. (AP Photo/Lynne Sladky)

Dec 11, 2011; Detroit, MI, USA; Detroit Lions wide receiver Nate Burleson (13) during player introductions prior to the game against the Minnesota Vikings at Ford Field. Mandatory Credit: Andrew Weber- US PRESSWIRE

Dec 8, 2011; Pittsburgh , PA, USA; Pittsburgh Steelers wide receiver Antonio Brown (84) runs the ball past Cleveland Browns defensive back Mike Adams (20) during the second half of the game at Heinz Field. Pittsburgh won the game, 14-3. Mandatory Credit: Jason Bridge-US PRESSWIRE

Dec 8, 2011; Pittsburgh , PA, USA; Pittsburgh Steelers wide receiver Mike Wallace (17) stretches for the end zone past Cleveland Browns Sheldon Brown (24) during the second half of the game at Heinz Field. Wallace was ruled down short of the end zone. Pittsburgh won the game, 14-3. Mandatory Credit: Jason Bridge-US PRESSWIRE

Buffalo Bills wide receiver Steve Johnson (13) makes a catch as San Diego Chargers cornerback Antoine Cason (20) defends in the first half of an NFL football game on Sunday, Dec. 11, 2011, in San Diego. (AP Photo/Lenny Ignelzi )

Chicago Bears running back Marion Barber (24) is hit by Denver Broncos defensive tackle Marcus Thomas, rear, and defensive end Elvis Dumervil (92) on his way to a first down in the third quarter of an NFL football game, Sunday, Dec. 11, 2011, in Denver. (AP Photo/Joe Mahoney)

Buffalo Bills head coach Chan Gailey yells from the sidelines in the first half of an NFL football game against the San Diego Chargers on Sunday, Dec. 11, 2011, in San Diego. (AP Photo/Lenny Ignelzi )

Green Bay Packers' Rob Francois (49) intercepts a pass in front of Oakland Raiders' Kevin Boss (87) during the first half of an NFL football game Sunday, Dec. 11, 2011, in Green Bay, Wis. (AP Photo/Mike Roemer)

Green Bay Packers' Donald Driver catches a pass in front of Oakland Raiders' Lito Sheppard (21) during the first half of an NFL football game Sunday, Dec. 11, 2011, in Green Bay, Wis. (AP Photo/Jim Prisching)

San Diego Chargers running back Ryan Mathews (24) collides with Buffalo Bills cornerback Leodis McKelvin (21) after running for a 37-yard gain in the first half of an NFL football game on Sunday, Dec. 11, 2011, in San Diego. (AP Photo/Lenny Ignelzi )

Green Bay Packers running back Ryan Grant (25) scores a touchdown during an NFL football game against the Oakland Raiders on Sunday, Dec. 11, 2011, in Green Bay, Wis. (Todd Rosenberg/NFL)

Minnesota Vikings quarterback Joe Webb (14) is pushed out of bounds on a first down attempt by Detroit Lions outside linebacker Bobby Carpenter, rear, in the fourth quarter of an NFL football game on Sunday, Dec. 11, 2011, in Detroit. The Lions defeated the Vikings 34-28. (AP Photo/Duane Burleson)

Houston Texans quarterback T.J. Yates celebrates after Houston defeated the Cincinnati Bengals 20-19 in an NFL football game on Sunday, Dec. 11, 2011, in Cincinnati. (AP Photo/Tony Tribble)

New York Giants' Brandon Jacobs scores the winning touchdown against the Dallas Cowboys during the second half of an NFL football game Sunday, Dec. 11, 2011, in Arlington, Texas. New York won 37-34. (AP Photo/Tony Gutierrez)

Dallas Cowboys' Dez Bryant scores a touchdwon against the New York Giants during the second half of an NFL football game Sunday, Dec. 11, 2011, in Arlington, Texas. (AP Photo/Tony Gutierrez)

Dallas Cowboys' Tony Romo celebrates a touchdown against the New York Giants during the second half of an NFL football game Sunday, Dec. 11, 2011, in Arlington, Texas. (AP Photo/Tony Gutierrez)

Dallas Cowboys' Felix Jones goes down as New York Giants' Aaron Ross defends during the first half of an NFL football game Sunday, Dec. 11, 2011, in Arlington, Texas. (AP Photo/Tony Gutierrez)

Dallas Cowboys tight end John Phillips scores a touchdown with New York Giants' Jacquian Williams in pursuit during the first half of an NFL football game Sunday, Dec. 11, 2011, in Arlington, Texas. (AP Photo/Tony Gutierrez)

Baltimore Ravens wide receiver Anquan Boldin (81) celebrates with Baltimore Ravens wide receiver Torrey Smith, obstructed, after Smith's touchdown in front of Indianapolis Colts cornerback Jacob Lacey in the first half of an NFL football game in Baltimore, Sunday, Dec. 11, 2011. (AP Photo/Nick Wass)

Denver Broncos kicker Matt Prater (5) runs off the field after kicking a 51-yard field goal to defeat the Chicago Bears in overtime of an NFL football game, Sunday, Dec. 11, 2011, in Denver. Denver won 13-10. (AP Photo/Jack Dempsey)