San Francisco 49ers tight end Vernon Davis (85) jumps over St. Louis Rams free safety Rodney McLeod during the first quarter of an NFL football game in San Francisco, Sunday, Dec. 1, 2013. (AP Photo/Tony Avelar)

Carolina Panthers' Cam Newton (1) is introduced before an NFL football game against the Tampa Bay Buccaneers in Charlotte, N.C., Sunday, Dec. 1, 2013. (AP Photo/Chuck Burton)

Miami Dolphins running back Lamar Miller (26) dives for the end one but is unable to score a touchdown as he stepped out of bounds after being hit by New York Jets defensive back Aaron Berry (22) before the goal line during the first half of an NFL football game, Sunday, Dec. 1, 2013, in East Rutherford, N.J. (AP Photo/Seth Wenig)

Philadelphia Eagles' Riley Cooper, right, is unable to catch a pass as Arizona Cardinals' Jerraud Powers defends during the second half of an NFL football game, Sunday, Dec. 1, 2013, in Philadelphia. (AP Photo/Matt Rourke)

New England Patriots tight end Rob Gronkowski (87) spikes the ball after scoring a touchdown during an NFL football game against the Houston Texans at Reliant Stadium on Sunday December 1, 2013 in Houston, Texas. New England won 34-31. (Aaron M. Sprecher/NFL)

New England Patriots' Aqib Talib, right, breaks up a pass intended for Houston Texans' DeAndre Hopkins (10) during the fourth quarter of an NFL football game on Sunday, Dec. 1, 2013, in Houston. (AP Photo/David J. Phillip)

Miami Dolphins cornerback Brent Grimes (21) breaks up a pass intended for New York Jets wide receiver David Nelson (86) during the second half of an NFL football game on Sunday, Dec. 1, 2013, in East Rutherford, N.J. (AP Photo/Seth Wenig)

Indianapolis Colts' Ricardo Mathews (91) lifts Jerrell Freeman (50) after Freeman intercepted a Tennessee Titans' Ryan Fitzpatrick pass late in an NFL football game on Sunday, Dec. 1, 2013, in Indianapolis. Indianapolis won 22-14. (AP Photo/AJ Mast)

San Diego Chargers cheerleaders perform as the Chargers play the Cincinnati Bengals during the first half in an NFL football game Sunday, Dec. 1, 2013, in San Diego. (AP Photo/Denis Poroy)

Cincinnati Bengals wide receiver Marvin Jones, left, can't make the catch as San Diego Chargers cornerback Richard Marshall defends during the second half of an NFL football game Sunday, Dec. 1, 2013, in San Diego. (AP Photo/Denis Poroy)

San Francisco 49ers tight end Vernon Davis (85) jumps into the end zone over St. Louis Rams cornerback Janoris Jenkins (21) to score on a 17-yard touchdown reception during the fourth quarter of an NFL football game in San Francisco, Sunday, Dec. 1, 2013. (AP Photo/Marcio Jose Sanchez)

A New York Jets cheerleader smiles for the camera during the second half of an NFL football game between the New York Jets and the Miami Dolphins, Sunday, Dec. 1, 2013, in East Rutherford, N.J. (AP Photo/Bill Kostroun)

Kansas City Chiefs cornerback Marcus Cooper (31) intercepts a pass intended for Denver Broncos wide receiver Eric Decker (87) during the first half of an NFL football game, Sunday, Dec. 1, 2013, in Kansas City, Mo. (AP Photo/Charlie Riedel)

Kansas City Chiefs cornerback Marcus Cooper (31) celebrates after he made an interception during the first half of an NFL football game against the Denver Broncos, Sunday, Dec. 1, 2013, in Kansas City, Mo. (AP Photo/Charlie Riedel)

Cincinnati Bengals cornerback Adam Jones (24) and San Diego Chargers defensive back Darrell Stuckey (25) run during the NFL game between the Cincinnati Bengals and the San Diego Chargers on Sunday, Dec. 1, 2013 at Qualcomm Stadium in San Diego. (Ric Tapia/NFL)

Cincinnati Bengals quarterback Andy Dalton (14) and Cincinnati Bengals wide receiver A.J. Green (18) stand in the tunnel before the NFL game between the Cincinnati Bengals and the San Diego Chargers on Sunday, Dec. 1, 2013 at Qualcomm Stadium in San Diego. (Ric Tapia/NFL)

Atlanta Falcons wide receiver Roddy White (84) makes a catch in front of Buffalo Bills cornerback Leodis McKelvin (21) during the second half of an NFL football game on Sunday, Dec. 1, 2013, in Toronto. (AP Photo/Gary Wiepert)

Cincinnati Bengals wide receiver Andrew Hawkins, left, gets past San Diego Chargers cornerback Johnny Patrick on his way to a 50-yard gain during the second half of an NFL football game Sunday, Dec. 1, 2013, in San Diego. (AP Photo/Gregory Bull)

Denver Broncos running back Knowshon Moreno (27) gets stopped by Kansas City Chiefs inside linebacker Derrick Johnson (56) and defensive back Quintin Demps (35) during the second half of an NFL football game, Sunday, Dec. 1, 2013, in Kansas City, Mo. (AP Photo/Orlin Wagner)

San Francisco 49ers wide receiver Michael Crabtree celebrates after a 60-yard reception against the St. Louis Rams during the third quarter of an NFL football game in San Francisco, Sunday, Dec. 1, 2013. (AP Photo/Tony Avelar)

San Francisco 49ers wide receiver Kassim Osgood (14) gets in a shoving match with St. Louis Rams defensive end Eugene Sims, center, and running back Chase Reynolds during the fourth quarter of an NFL football game in San Francisco, Sunday, Dec. 1, 2013. (AP Photo/Marcio Jose Sanchez)

Denver Broncos wide receiver Eric Decker (87) celebrates a touchdown with center Manny Ramirez (66) and guard Zane Beadles (68) during the second half of an NFL football game, Sunday, Dec. 1, 2013, in Kansas City, Mo. (AP Photo/Charlie Riedel)

St. Louis Rams running back Zac Stacy (30) is tackled by San Francisco 49ers defensive end Tony Jerod-Eddie, left, linebacker NaVorro Bowman (53) during the second half of an NFL football game in San Francisco, Sunday, Dec. 1, 2013. (AP Photo/Marcio Jose Sanchez)

St. Louis Rams quarterback Kellen Clemens, left, talks with San Francisco 49ers quarterback Colin Kaepernick after an NFL football game in San Francisco, Sunday, Dec. 1, 2013. The 49ers won 23-13. (AP Photo/Marcio Jose Sanchez)

Denver Broncos quarterback Peyton Manning (18) greets Kansas City Chiefs quarterback Alex Smith (11) after an NFL football game, Sunday, Dec. 1, 2013, in Kansas City, Mo. The Broncos won 35-28. (AP Photo/Charlie Riedel)

Washington Redskins tight end Fred Davis (83) is hit by New York Giants strong safety Antrel Rolle (26) and cornerback Prince Amukamara (20) during the first half of an NFL football game Sunday, Dec. 1, 2013, in Landover, Md. (AP Photo/Nick Wass)

Washington Redskins wide receiver Aldrick Robinson (11) can't make the catch as he is covered by New York Giants cornerback Prince Amukamara, behind, and free safety Will Hill, during the first half of an NFL football game Sunday, Dec. 1, 2013, in Landover, Md. (AP Photo/Nick Wass)

New York Giants running back Andre Brown (35) celebrates his touchdown during the second half of an NFL football game against the Washington Redskins, Sunday, Dec. 1, 2013, in Landover, Md. (AP Photo/Nick Wass)

Buffalo Bills quarterback EJ Manuel (3) scores a touchdown in front of Atlanta Falcons strong safety William Moore during the first half of an NFL football game on Sunday, Dec. 1, 2013, in Toronto. (AP Photo/Gary Wiepert)

Buffalo Bills running back Fred Jackson (22) celebrates his touchdown against the Atlanta Falcons during the first half of an NFL football game on Sunday, Dec. 1, 2013, in Toronto. (AP Photo/Gary Wiepert)

New England Patriots' James Develin (46) scores a touchdown against the Houston Texans during the third quarter of an NFL football game on Sunday, Dec. 1, 2013, in Houston. (AP Photo/David J. Phillip)

Carolina Panthers' Ted Ginn (19) and Brandon LaFell (11) celebrate Ginn's touchdown catch against the Tampa Bay Buccaneers in the second half of an NFL football game in Charlotte, N.C., Sunday, Dec. 1, 2013. (AP Photo/Bob Leverone)

Philadelphia Eagles' Zach Ertz, left, is unable to pull in a pass against Arizona Cardinals' Tyrann Mathieu during the second half of an NFL football game, Sunday, Dec. 1, 2013, in Philadelphia. (AP Photo/Michael Perez)

Philadelphia Eagles' Riley Cooper, top, is unable to pull in a pass against Arizona Cardinals' Jerraud Powers during the second half of an NFL football game, Sunday, Dec. 1, 2013, in Philadelphia. (AP Photo/Michael Perez)

New England Patriots' LeGarrette Blount (29) celebrates with teammates James Develin (46) and Brandon Bolden (38) after scoring a touchdown against the Houston Texans during the fourth quarter of an NFL football game on Sunday, Dec. 1, 2013, in Houston. (AP Photo/David J. Phillip)

Houston Texans' Case Keenum (7) is hit by New England Patriots' Andre Carter, right, as he tries to pass during the fourth quarter of an NFL football game Sunday, Dec. 1, 2013, in Houston. (AP Photo/David J. Phillip)

Indianapolis Colts' Jerrell Freeman (50) celebrates after Indianapolis defeated the Tennessee Titans, 22-14 in an NFL football game on Sunday, Dec. 1, 2013, in Indianapolis. (AP Photo/AJ Mast)

Miami Dolphins wide receiver Mike Wallace (11) celebrates after scoring a touchdown as New York Jets cornerback Kyle Wilson (20) runs behind him during the second half of an NFL football game, Sunday, Dec. 1, 2013, in East Rutherford, N.J. (AP Photo/Bill Kostroun)

San Francisco 49ers wide receiver Anquan Boldin, right, yells as he is grabbed by St. Louis Rams cornerback Janoris Jenkins during the first quarter of an NFL football game in San Francisco, Sunday, Dec. 1, 2013. Jenkins was penalized on the play. (AP Photo/Marcio Jose Sanchez)

New England Patriots tight end Rob Gronkowski (87) can't come up with the catch during an NFL football game against the Houston Texans at Reliant Stadium on Sunday December 1, 2013 in Houston, Texas. New England won 34-31. (Aaron M. Sprecher/NFL)

A Houston Texans cheerleader performs during an NFL football game against the New England Patriots at Reliant Stadium on Sunday December 1, 2013 in Houston, Texas. New England won 34-31. (Aaron M. Sprecher/NFL)

Kansas City Chiefs wide receiver Junior Hemingway (88) celebrates a touchdown reception with Dwayne Bowe (82) as Denver Broncos strong safety Mike Adams (20) looks on during the first half of an NFL football game, Sunday, Dec. 1, 2013, in Kansas City, Mo. (AP Photo/Orlin Wagner)

Cleveland Browns wide receiver Greg Little makes a 4-yard touchdown catch against Jacksonville Jaguars defensive back Winston Guy (22) and cornerback Dwayne Gratz in the third quarter of an NFL football game on Sunday, Dec. 1, 2013, in Cleveland. (AP Photo/David Richard)

Minnesota Vikings wide receiver Cordarrelle Patterson (84) reacts with field judge Jeff Lamberth, left, after scoring on a 33-yard touchdown run in the first half of an NFL football game against the Chicago Bears, Sunday, Dec. 1, 2013, in Minneapolis. (AP Photo/Ann Heisenfelt)

New England Patriots' Shane Vereen (34) is knocked out of bounds at the 1-yard line by Houston Texans' D.J. Swearinger (36) during the third quarter of an NFL football game Sunday, Dec. 1, 2013, in Houston. (AP Photo/Patric Schneider)

Tennessee Titans' Ryan Fitzpatrick (4) is sacked by Indianapolis Colts' Robert Mathis (98) during the second half of an NFL football game on Sunday, Dec. 1, 2013, in Indianapolis. The Colts recovered the fumble. (AP Photo/Michael Conroy)

Philadelphia Eagles cheerleaders perform during the first half of an NFL football game, Sunday, Dec. 1, 2013, in Philadelphia. (AP Photo/Matt Rourke)

Carolina Panthers' Cam Newton (1) dives over the goal line for a touchdown as Tampa Bay Buccaneers' Darrelle Revis (24) defends in the first half of an NFL football game in Charlotte, N.C., Sunday, Dec. 1, 2013. (AP Photo/Bob Leverone)

A New York Jets cheerleader performs during the first half of an NFL football game between the New York Jets and the Miami Dolphins, Sunday, Dec. 1, 2013, in East Rutherford, N.J. (AP Photo/Seth Wenig)

Arizona Cardinals' Patrick Peterson, right, breaks up a pass intended for Philadelphia Eagles' DeSean Jackson during the first half of an NFL football game, Sunday, Dec. 1, 2013, in Philadelphia. (AP Photo/Matt Rourke)

Philadelphia Eagles' Brent Celek celebrates after scoring a touchdown during the first half of an NFL football game against the Arizona Cardinals Sunday, Dec. 1, 2013, in Philadelphia. (AP Photo/Michael Perez)

New York Jets running back Chris Ivory, left, is wrapped up by Miami Dolphins defensive end Cameron Wake during the first half of an NFL football game on Sunday, Dec. 1, 2013, in East Rutherford, N.J. (AP Photo/Seth Wenig)

Carolina Panthers' Drayton Florence (29) knocks the ball from Tampa Bay Buccaneers' Chris Owusu (80) in the first half of an NFL football game in Charlotte, N.C., Sunday, Dec. 1, 2013. (AP Photo/Mike McCarn)

Jacksonville Jaguars tight end Clay Harbor (86) celebrates his 18-yard touchdown catch with Danny Noble in the first quarter of an NFL football game against the Cleveland Browns Sunday, Dec. 1, 2013, in Cleveland. (AP Photo/Tony Dejak)

New England Patriots' Rob Gronkowski celebrates a touchdown against the Houston Texans during the first quarter of an NFL football game Sunday, Dec. 1, 2013, in Houston. (AP Photo/David J. Phillip)

Carolina Panthers quarterback Cam Newton (1) celebrates after running for a long gain against the Tampa Bay Buccaneers in the first half of an NFL football game in Charlotte, N.C., Sunday, Dec. 1, 2013. (AP Photo/Mike McCarn)

New England Patriots' Isaac Sopoaga celebrates after he sacked Houston Texans' Case Keenum for a loss during the second quarter of an NFL football game Sunday, Dec. 1, 2013, in Houston. (AP Photo/David J. Phillip)

Tennessee Titans' Chris Johnson (28) dives while being tackled by Indianapolis Colts' Cory Redding during the first half of an NFL football game Sunday, Dec. 1, 2013, in Indianapolis. (AP Photo/Michael Conroy)

Arizona Cardinals' Larry Fitzgerald scores a touchdown during the first half of an NFL football game against the Philadelphia Eagles, Sunday, Dec. 1, 2013, in Philadelphia. (AP Photo/Michael Perez)

Minnesota Vikings wide receiver Cordarrelle Patterson, left, runs from Chicago Bears defenders Tim Jennings (26) and Chris Conte (47) for a 33-yard touchdown run in the first half of an NFL football game, Sunday, Dec. 1, 2013, in Minneapolis. (AP Photo/Ann Heisenfelt)

Miami Dolphins running back Mike Gillislee (23) falls short of the end zone while running against the New York Jets during the first half of an NFL football game on Sunday, Dec. 1, 2013, in East Rutherford, N.J. (AP Photo/Bill Kostroun)

New England Patriots' Tom Brady (12) looks for help from the sideline during the second quarter of an NFL football game against the Houston Texans, Sunday, Dec. 1, 2013, in Houston. (AP Photo/David J. Phillip)

New York Jets cornerback Dee Milliner (27) breaks up a pass intended for Miami Dolphins wide receiver Brian Hartline (82) during the first half of an NFL football game, Sunday, Dec. 1, 2013, in East Rutherford, N.J. (AP Photo/Seth Wenig)

Houston Texans' Ben Tate celebrates a touchdown against the New England Patriots during the first quarter of an NFL football game Sunday, Dec. 1, 2013, in Houston. (AP Photo/Patric Schneider)

Carolina Panthers' Cam Newton, right, runs past Tampa Bay Buccaneers' Gerald McCoy, left, in the first half of an NFL football game in Charlotte, N.C., Sunday, Dec. 1, 2013. (AP Photo/Mike McCarn)

Jacksonville Jaguars tight end Clay Harbor (86) crosses the goal line after beating Cleveland Browns free safety Tashaun Gipson on an 18-yard touchdown in the first quarter of an NFL football game Sunday, Dec. 1, 2013, in Cleveland. (AP Photo/Tony Dejak)

New York Jets cornerback Dee Milliner (27) breaks up a pass intended for Miami Dolphins wide receiver Brian Hartline (82) during the first half of an NFL football game, Sunday, Dec. 1, 2013, in East Rutherford, N.J. (AP Photo/Bill Kostroun)

Philadelphia Eagles' Trent Cole (58) knocks the ball loose from Arizona Cardinals' Carson Palmer during the first half of an NFL football game, Sunday, Dec. 1, 2013, in Philadelphia. (AP Photo/Michael Perez)

Cleveland Browns running back Willis McGahee (26) stretches into the end zone on a 1-yard touchdown run against the Jacksonville Jaguars in the fist quarter of an NFL football game Sunday, Dec. 1, 2013 in Cleveland. (AP Photo/David Richard)

In this photo taken with a fisheye lens, New England Patriots' Tom Brady throws to warm up before an NFL football game against the Houston Texans, Sunday, Dec. 1, 2013, in Houston. (AP Photo/David J. Phillip)

Carolina Panthers' Cam Newton pauses by a goal post as he warms up before an NFL football game against the Tampa Bay Buccaneers in Charlotte, N.C., Sunday, Dec. 1, 2013. (AP Photo/Chuck Burton)

Baltimore Ravens wide receiver Jacoby Jones eats turkey on the field after an NFL football game against the Pittsburgh Steelers, Thursday, Nov. 28, 2013, in Baltimore. Baltimore won 22-20. (AP Photo/Nick Wass)

Nov 28, 2013; Arlington, TX, USA; Dallas Cowboys cheerleaders perform during a NFL football game against the Oakland Raiders on Thanksgiving at AT&T Stadium. (Kirby Lee-USA TODAY Sports)

Oakland Raiders wide receiver Andre Holmes (18) catches a pass in front of Dallas Cowboys cornerback Brandon Carr (39) during the first half of an NFL football game, Thursday, Nov. 28, 2013, in Arlington, Texas. (AP Photo/Brandon Wade)

Dallas Cowboys quarterback Tony Romo (9) celebrates a touchdown against the Oakland Raiders during the second half of an NFL football game, Thursday, Nov. 28, 2013, in Arlington, Texas. (AP Photo/LM Otero)

Dallas Cowboys cornerback Brandon Carr (39) intercepts the ball in the end zone against Oakland Raiders receiver Jacoby Ford (12) in the fourth quarter during a NFL football game on Thanksgiving at AT&T Stadium. (Matthew Emmons/USA TODAY Sports)

Pittsburgh Steelers tackle Marcus Gilbert, left, and Baltimore Ravens defensive end Arthur Jones get into a scuffle in the first half of an NFL football game, Thursday, Nov. 28, 2013, in Baltimore. (AP Photo/Nick Wass)

Baltimore Ravens kicker Justin Tucker (9) reacts after making a 43-yard field goal in the first half of an NFL football game against the Pittsburgh Steelers, Thursday, Nov. 28, 2013, in Baltimore. (AP Photo/Gail Burton)

Green Bay Packers strong safety Morgan Burnett (42) celebrates in the end zone after his fumble recovery returned for a touchdown during the second quarter of an NFL football game against the Detroit Lions at Ford Field in Detroit, Thursday, Nov. 28, 2013. (AP Photo/Paul Sancya)

Detroit Lions wide receiver Jeremy Ross (12) dunks the ball after scoring on a 5-yard pass reception during the second quarter of an NFL football game against the Green Bay Packers at Ford Field in Detroit, Thursday, Nov. 28, 2013. (AP Photo/Rick Osentoski)

Detroit Lions wide receiver Calvin Johnson (81) is covered by Green Bay Packers cornerback Sam Shields (37) in the end zone during the second half of an NFL football game at Ford Field in Detroit, Thursday, Nov. 28, 2013. (AP Photo/Paul Sancya)

Miami Dolphins kicker Caleb Sturgis (9) is congratulated by teammates after kicking a field goal against the New York Jets during the first half of an NFL football game on Sunday, Dec. 1, 2013, in East Rutherford, N.J. (AP Photo/Seth Wenig)