Detroit Lions wide receiver Ryan Broyles (84) makes a touchdown catch in the first half of an NFL football game against the Seattle Seahawks, Sunday, Oct. 28, 2012. in Detroit. (AP Photo/Rick Osentoski)

St. Louis Rams wide receiver Chris Givens, left, goes to score a touch down as he is tackled by New England Patriots cornerback Devin McCourty, right, during the first half of a NFL football game at Wembley Stadium, London, Sunday, Oct. 28, 2012. (AP Photo/Matt Dunham)

Atlanta Falcons wide receiver Drew Davis (19) celebrates with teammates Julio Jones, top, and Roddy White, center, after scoring on a 15-yard touchdown pass reception during the first half of an NFL football game against the Philadelphia Eagles, Sunday, Oct. 28, 2012, in Philadelphia. (AP Photo/Mel Evans)

Pittsburgh Steelers tight end Leonard Pope (45) celebrates a touchdown catch as Washington Redskins linebacker Keenan Robinson (52) walks by in the first quarter during an NFL football game on Sunday, Oct. 28, 2012, in Pittsburgh. (AP Photo/Don Wright)

St. Louis Rams running back Steven Jackson takes the field prior to a game against the New England Patriots at Wembley Stadium on October 28, 2012 in London, England. (Dave Shopland/NFL)

Chicago Bears linebackers Lance Briggs (55) and Brian Urlacher (54) lead players onto the field for warmups before the start of an NFL football game against the Carolina Panthers in Chicago, Sunday, Oct. 28, 2012. (AP Photo/Nam Y. Huh)

Minnesota Vikings wide receiver Percy Harvin, right, catches an 18-yard touchdown pass ahead of Tampa Bay Buccaneers cornerback Eric Wright, left, during the first half of an NFL football game Thursday, Oct. 25, 2012, in Minneapolis. (AP Photo/Jim Mone)

Tampa Bay Buccaneers running back Doug Martin (22) breaks a tackle by Minnesota Vikings defensive tackle Letroy Guion (98) during a 64-yard touchdown reception in the second half of an NFL football game Thursday, Oct. 25, 2012, in Minneapolis. (AP Photo/Andy King)

Tampa Bay Buccaneers running back Doug Martin, left, runs over Minnesota Vikings free safety Harrison Smith during the second half of an NFL football game Thursday, Oct. 25, 2012, in Minneapolis. (AP Photo/Jim Mone)

Pittsburgh Steelers tight end Leonard Pope (45) gets hit by Washington Redskins linebacker Keenan Robinson (52) as he gets into the end zone after catching a pass for a touchdown in the first quarter during an NFL football game on Sunday, Oct. 28, 2012, in Pittsburgh. (AP Photo/Don Wright)

Seattle Seahawks running back Marshawn Lynch (24) makes a touchdown run in the first half of an NFL football game against the Detroit Lions, Sunday, Oct. 28, 2012. in Detroit. (AP Photo/Paul Sancya )

Detroit Lions wide receiver Ryan Broyles (84) celebrates his touchdown with wide receiver Calvin Johnson in the first half of an NFL football game, Sunday, Oct. 28, 2012. in Detroit. (AP Photo/Rick Osentoski)

Washington Redskins quarterback Robert Griffin III, center, is stopped by Pittsburgh Steelers nose tackle Casey Hampton, right, and cornerback Keenan Lewis (23) in the second quarter during an NFL football game on Sunday, Oct. 28, 2012, in Pittsburgh. (AP Photo/Don Wright)

Carolina Panthers wide receiver Louis Murphy (83) celebrates with teammates after he recovered a Panthers fumble in the end zone for a touchdown against the Chicago Bears during the first half of an NFL football game in Chicago, Sunday, Oct. 28, 2012. (AP Photo/Charles Rex Arbogast)

Carolina Panthers quarterback Cam Newton (1) fumbles into the end zone as he is hit by Chicago Bears safety Major Wright (21) during the first half of an NFL football game in Chicago, Sunday, Oct. 28, 2012. The ball was recovered by the Panthers' Louis Murphy for a touchdown. (AP Photo/Charles Rex Arbogast)

Tennessee Titans wide receiver Kendall Wright (13) makes a touchdown catch against Indianapolis Colts cornerback Cassius Vaughn (32) during the first half of an NFL football game Sunday, Oct. 28, 2012, in Nashville, Tenn. (AP Photo/Wade Payne)

Miami Dolphins running back Daniel Thomas (33) celebrates with teammate Mike Pouncey after scoring a touchdown during the first half of an NFL football game against the New York Jets, Sunday, Oct. 28, 2012, in East Rutherford, N.J. (AP Photo/Bill Kostroun)

Jacksonville Jaguars tight end Marcedes Lewis tries to catch a pass between Green Bay Packers' Brad Jones (59) , M.D. Jennings (43) and Morgan Burnett (42) during the first half of an NFL football game Sunday, Oct. 28, 2012, in Green Bay, Wis. (AP Photo/Mike Roemer)

Seattle Seahawks running back Marshawn Lynch (24) leaps over Detroit Lions free safety Louis Delmas (26) in the second half of an NFL football game, Sunday, Oct. 28, 2012. in Detroit. At left is Seattle Seahawks guard James Carpenter (77). (AP Photo/Paul Sancya )

Chicago Bears cornerback Tim Jennings (26) scores after an interception against the Carolina Panthers during the second half of an NFL football game in Chicago, Sunday, Oct. 28, 2012. The Bears defeated the Panthers 23-22. (AP Photo/Charles Rex Arbogast)

Kansas City Chiefs running back Jamaal Charles (25) battles Oakland Raiders defensive back Joselio Hanson (23) during the first half of an NFL football game at Arrowhead Stadium in Kansas City, Mo., Sunday, Oct. 28, 2012. (AP Photo/Reed Hoffmann)

Detroit Lions wide receiver Titus Young (16) celebrates his winning touchdown reception against Seattle Seahawks cornerback Brandon Browner (39) in the end zone during the second half of an NFL football game, Sunday, Oct. 28, 2012. in Detroit. The Lions won 28-24. (AP Photo/Carlos Osorio)

Chicago Bears wide receiver Brandon Marshall, top, is tackled by Carolina Panthers linebackers Thomas Davis (58) and Luke Kuechly (59) after a reception during the second half of an NFL football game in Chicago, Sunday, Oct. 28, 2012. (AP Photo/Charles Rex Arbogast)

Indianapolis Colts running back Delone Carter (34) jumps into the end zone for a touchdown as Tennessee Titans outside linebackers Akeem Ayers (56) and Zach Brown (55) defend during the second half of an NFL football game, Sunday, Oct. 28, 2012, in Nashville, Tenn. (AP Photo/Mark Humphrey)

San Diego Chargers running back Ryan Mathews is tackled by Cleveland Browns defensive end Jabaal Sheard (97) in the third quarter of an NFL football game Sunday, Oct. 28, 2012, in Cleveland. (AP Photo/Phil Long)

Rams cheerleaders prior to the start of a NFL football game between the St. Louis Rams and New England Patriots at Wembley Stadium, London, Sunday, Oct. 28, 2012. (AP Photo/Matt Dunham)

Miami Dolphins wide receiver Brian Hartline (82) is tackled by New York Jets strong safety Yeremiah Bell (37) during the first half of an NFL football game Sunday, Oct. 28, 2012 in East Rutherford, N.J. (AP Photo/Bill Kostroun)

Jacksonville Jaguars middle linebacker Paul Posluszny tackles Green Bay Packers running back Alex Green during the first half of an NFL football game Sunday, Oct. 28, 2012, in Green Bay, Wis. (AP Photo/Mike Roemer)

Pittsburgh Steelers running back Jonathan Dwyer (27) is stopped at the goal line by Washington Redskins inside linebacker Perry Riley (56) in the third quarter of an NFL football game on Sunday, Oct. 28, 2012, in Pittsburgh. (AP Photo/Don Wright)

Indianapolis Colts running back Vick Ballard (33) moves into the end zone as Tennessee Titans free safety Michael Griffin (33) defends during overtime of an NFL football game Sunday, Oct. 28, 2012, in Nashville, Tenn. Ballard scored the touchdown The Colts won 19-13. (AP Photo/Joe Howell)

running back Matt Forte #22 of the Chicago Bears runs the football against the Carolina Panthers during an NFL football game in Chicago, on Sunday, Oct. 28, 2012. (Todd Rosenberg/NFL)

Kansas City Chiefs running back Peyton Hillis (40) is tackled by Oakland Raiders outside linebacker Miles Burris (56), middle linebacker Rolando McClain (55) and cornerback Mike Mitchell (34) during the first half of an NFL football game at Arrowhead Stadium in Kansas City, Mo., Sunday, Oct. 28, 2012. (AP Photo/Ed Zurga)

Dallas Cowboys tight end Jason Witten (82) is tackled by New York Giants outside linebacker Michael Boley (59) and Keith Rivers (55) during the first half of an NFL football game, Sunday, Oct. 28, 2012, in Arlington, Texas. (AP Photo/Tony Gutierrez)

Green Bay Packers wide receiver Donald Driver celebrates a touchdown after doing a Lambeau Leap during the second half of an NFL football game against the Jacksonville Jaguars, Sunday, Oct. 28, 2012, in Green Bay, Wis. The Packers won 24-15. (AP Photo/Mike Roemer)

Dallas Cowboys quarterback Tony Romo (9) gets past New York Giants middle linebacker Chase Blackburn (93) to score a touchdwon during the second half of an NFL football game Sunday, Oct. 28, 2012 in Arlington, Texas. (AP Photo/Sharon Ellman)

wide receiver Devery Henderson #19 of the New Orleans Saints reaches for the ball against cornerback Tony Carter #32 of the Denver Broncosin an NFL game at the Sports Authority Field at Mile High in Denver, Colorado on October 28, 2012. (Ric Tapia/NFL)

Defensive tackle Mitch Unrein #96 of the Denver Broncos spikes the ball while taking on the New Orleans Saints during an NFL game at Sports Authority Field at Mile High in Denver, Colorado on October 28, 2012. (Ric Tapia/NFL)

Denver Broncos quarterback Peyton Manning (18) is tripped up by New Orleans Saints defensive tackle Tom Johnson (96) as he runs the ball in the third quarter of an NFL football game, Sunday, Oct. 28, 2012, in Denver. (AP Photo/Jack Dempsey)