Pittsburgh Steelers wide receiver Antonio Brown (84) dashes towards the end zone and a touchdown after catching a pass in the second quarter of the NFL football game against the Indianapolis Colts, Sunday, Oct. 26, 2014 in Pittsburgh. (AP Photo/Don Wright)

St. Louis Rams tight end Jared Cook (89) gets past San Francisco 49ers defenders Perrish Cox (20) and Eric Reid (35) in the first quarter of an NFL football game Monday, Oct. 13, 2014, in St Louis. (AP Photo/Billy Hurst)

Green Bay Packers linebacker Clay Matthews (52) celebrates a quarterback sack during a Week 6 NFL football game against the St. Louis Rams on October 16, 2011 in Green Bay, Wisconsin. The Packers won 24-3. (AP Photo/David Stluka)

Atlanta Falcons quarterback Matt Ryan (2) celebrates his touchdown pass during an NFL football game against the Carolina Panthers, Sunday, September 30, 2012, in Atlanta. The Falcons won 30-28. (AP Photo/Paul Abell)

New England Patriots line backer Jerod Mayo (51) leads the team in a pre game rally prior to the NFL week 7 regular season football game against the New Yorks Jets on Sunday October 21, 2012 in Foxborough, Massachusetts. The Patriots won the game 29-26 in overtime. (AP Photo / Jim Mahoney)

Chicago Bears quarterback Jay Cutler (6) throws a pass during a Week 15 NFL football game against the Green Bay Packers Sunday, December 16, 2012 in Chicago. The Packers won 21-13. (AP Photo/David Stluka)

Atlanta Falcons cornerback Chris Owens (21) and cornerback Dominique Franks (29) smile during an NFL football game against the New Orleans Saints, Thursday, November 29, 2012, in Atlanta. The falcons won 23-13. (AP Photo/Paul Abell)

Washington Redskins rookie quarterback Robert Griffin III (10) scrambles for a gain during an NFL football game against the Carolina Panthers at FedEx Field on Sunday November 4, 2012 in Landover, Maryland. Carolina won 21-13. (Aaron M. Sprecher/NFL)

The Pittsburgh Steelers offense, wearing 1934 throwback uniforms, huddles during the first quarter of an NFL football game against the Washington Redskins in Pittsburgh, Sunday, Oct. 28, 2012. The Steelers won 27-12. (AP Photo/Gene J. Puskar)

New England Patriots defensive back Alfonzo Dennard (37) intercepts a pass with defensive back Tavon Wilson (27) intended for New York Jets wide receiver Stephen Hill (84) during the NFL week 7 regular season football game on Sunday October 21, 2012 in Foxborough, Massachusetts. The Patriots won the game 29-26 in overtime. (AP Photo / Jim Mahoney)

Detroit Lions wide receiver Bill Schroeder sets for play November 28, 2002 at Ford Field in Detroit. The New England Patriots defeated the Lions 20 - 12 in a Thanksgiving Day game. (AP Photo / Al Messerschmidt)

Pittsburgh Steelers running back Rashard Mendenhall (34) runs against the Baltimore Ravens in the second half of an NFL football game on Sunday, Nov. 18, 2012, in Pittsburgh. (AP Photo/Don Wright)

Green Bay Packers running back Eddie Lacy rushes against the Cleveland Browns during an NFL football game Sunday, Oct. 20, 2013, in Green Bay, Wis. (AP Photo/Matt Ludtke)

New England Patriots quarterback Tom Brady looks to pass in the second quarter against the Detroit Lions on Thursday, Nov. 28, 2002, in Detroit. Brady was 18-of-30 for 210 yards in the Patriots' 20-12 win. (AP Photo/John F. Martin)

New England Patriots running back Antowain Smith (32) is tackled by Detroit Lions' James Hall, rear, after 2-yard gain during the first quarter Thursday, Nov. 28, 2002, in Detroit. Smith rushed for 80 yards and one touchdown in the Patriots' 20-12 win. (AP Photo/John F. Martin)

Dallas Cowboys running back Eddie George (27) runs against Chicago Bears cornerback Nathan Vasher during the fourth quarter in Irving, Texas, Thursday, Nov. 25, 2004. The Cowboys won 21-7. (AP Photo/Tony Gutierrez)

Chicago Bears quarterback Craig Krenzel (16) rolls out as teammate Mark Colombo (75) tries to stop Dallas Cowboys defensive end Eric Ogbogu (90) during the first quarter in Irving, Texas, Thursday, Nov. 25, 2004. (AP Photo/Donna McWilliam)

Dallas Cowboys quarterback Vinny Testaverde, right, drops back into the pocket as Tyson Walter, background left, defends against the pressure from Chicago Bears Tank Johnson (99) in their game, Nov. 25, 2004, in Dallas. The 41-year-old Testaverde is the starting quarterback again for the (4-7) Cowboys sitting Drew Henson who started last week against the Bears. (AP Photo/Tony Gutierrez)

San Diego Chargers' LaDainian Tomlinson high-steps into the end zone with the second of his three touchdowns during the fourth quarter of the Chargers 32-25 victory over the Cleveland Browns in their football game in San Diego Sunday, Nov. 5, 2006. (AP Photo/Jack Smith)

The Pittsburgh Steelers throwback uniform is seen in the team locker room at Heinz Field during the teams annual fan blitz on NFL draft day in Pittsburgh, Saturday, April 28, 2007. The team plans on playing two games in these uniforms in celebration of their 75th season. (AP Photo/Keith Srakocic)

Pittsburgh Steelers quarterback Ben Roethlisberger, right, passes under pressure by Buffalo Bills linebacker Paul Posluszny in the first quarter of the football game in Pittsburgh, Sunday, Sept. 16, 2007. The Steelers won 26-3. The Steelers were wearing throwback jerseys commemorating their 75th season in the league. (AP Photo/Keith Srakocic)

A happy Philadelphia Eagles quarterback Donovan McNabb watches the game from the sidelines against the Detroit Lions in the second half of their football game Sunday, Sept. 23, 2007 in Philadelphia. McNabb sat out the last minutes of the game as the Eagles won, 56-21. (AP Photo/Rusty Kennedy)

Washington Redskins' quarterback Jason Campbell (17), finds a receiver as offensive lineman Todd Wade (71), blocks New York Giants defensive end Michael Strahan, right, during the first quarter of an NFL football game, at Fedex Field in Landover, Md., Sunday, Sept. 23, 2007. (AP Photo/Manuel Balce Ceneta)

Philadelphia Eagles cornerback Lito Sheppard (26),left, celebrates with running back Correll Buckhalter (28) after he scored a touchdown during a football game against the Detriot Lions Sunday, Sept. 23, 2007, in Philadelphia. The Eagles won 56-21. (AP Photo/Tom Mihalek)

New York Jets quarterback Chad Pennington throws a pass during the first half of the Jets 16-9 loss to the Philadelphia Eagles at Giants Stadium in East Rutherford, N.J., Sunday, Oct. 14, 2007. The Jets were wearing their Titans throwback uniforms. (AP Photo/Kathy Willens)

Center Hank Fraley #66 of the Cleveland Browns gets set to snap the ball at the line of scrimmage during the game against the Houston Texans on November 25, 2007 at Cleveland Browns Stadium in Cleveland, Ohio. The Browns defeated the Texans 27-17. (AP Photo/Paul Spinelli)

Pittsburgh Steelers receiver Santonio Holmes (10) celebrates with teammate Nate Washington (85) after scoring on a 38-yard pass play from quarterback Ben Roethlisberger against the Baltimore Ravens during the third quarter of a NFL football game in Pittsburgh, Monday, Sept. 29, 2008. The Steelers won in overtime 23-20. (AP Photo/Gene J. Puskar)

Pittsburgh Steelers wide receiver Hines Ward runs with the ball after making a catch against the Baltimore Ravens in the NFL football game in Pittsburgh, Monday, Sept. 29, 2008. (AP Photo/Keith Srakocic)

Pittsburgh Steelers running back Mewelde Moore runs against the Baltimore Ravens in the NFL football game in Pittsburgh, Monday, Sept. 29, 2008. (AP Photo/Keith Srakocic)

New York Jets punt returner Leon Washington, left, breaks away from Cincinnati Bengals' Daniel Coats (86), Dhani Jones (57) and Corey Lynch for a 22-yard punt-return during the third quarter of an NFL football game Sunday, Oct. 12, 2008, at Giants Stadium in East Rutherford, N.J. The Jets wore New York Titans throwback uniforms and defeated the Bengals 26-14. (AP Photo/Bill Kostroun)

New York Jets tight end Chris Baker signals after picking up a first down during the fourth quarter of an NFL football game against the Cincinnati Bengals, Sunday, Oct. 12, 2008, at Giants Stadium in East Rutherford, N.J. The Jets wore New York Titans throwback uniforms and defeated the Bengals 26-10. (AP Photo/Bill Kostroun)

New England Patriots head coach Bill Belichick is seen wearing a throwback Boston Patriots sweatshirt commemorating the fiftieth anniversary of the AFL during organized team activities football practice in Foxborough, Mass., Thursday, May 28, 2009. (AP Photo/Robert E. Klein)

Defensive end Alonzo Spellman #90 of the Chicago Bears looks across the line of scrimmage against the Minnesota Vikings at Soldier Field on September 18, 1994 in Chicago, Illinois. The Vikings defeated the Bears 42-14. (National Football League)

The Chicago Bears special teams tries to block a field goal attempt against the Minnesota Vikings at Soldier Field on September 18, 1994 in Chicago, Illinois. The Vikings defeated the Bears 42-14. (National Football League)

Running back Lewis Tillman #27 of the Chicago Bears tries to maintain his balance on a carry against the Minnesota Vikings at Soldier Field on September 18, 1994 in Chicago, Illinois. The Vikings defeated the Bears 42-14. (National Football League)

Green Bay Packers quarterback Brett Favre (4) rolls out during a 17-16 loss to the New England Patriots on October 2, 1994, at Foxboro Stadium in Foxboro, Massachusetts. (National Football League)

The Washington Redskins come out to warm up during the pregame before the Redskins 27-20 loss to the Atlanta Falcons on September 25, 1994 at RFK Stadium in Washington, D.C. (National Football League)

Green Bay Packers wide receiver Sterling Sharpe (84) catches a pass during a 17-16 loss to the New England Patriots on October 2, 1994, at Foxboro Stadium in Foxboro, Massachusetts. (National Football League)

A throwback Buffalo Bills helmet and a football sit on the turf before an NFL football game between the New England Patriots and the Buffalo Bills, Monday, Sept. 14, 2009, in Foxborough, Mass. (AP Photo/Winslow Townson)

A pair of officials wear their throwback uniforms during an NFL game between the San Diego Chargers and the Oakland Raiders, Monday, Sept. 14, 2009 in Oakland. The Chargers won the game, 24-20. (AP Photo/Greg Trott)

Kansas City Chiefs and the San Diego Chargers wear throwback uniforms during the first half of an NFL football game Sunday, Oct. 25, 2009 in Kansas City, Mo. (AP Photo/Charlie Riedel)

A New England Patriots throwback helmet sits on the sidelines during the NFL football game against the Minnesota Vikings in Foxborough, Mass., Sunday, Oct. 31, 2010, won by the Patriots 28-18. (AP Photo/Robert E. Klein)

Indianapolis Colts come in for a huddle before the NFL Game between the Indianapolis Colts and the Philadelphia Eagles. The Eagles won 26-24 at Lincoln Financial Field in Philadelphia, Pennsylvania on Sunday November 7th 2010. (AP Photo/Brian Garfinkel)

Indianapolis Colts quarterback Peyton Manning #18 during the NFL Game between the Indianapolis Colts and the Philadelphia Eagles. The Eagles won 26-24 at Lincoln Financial Field in Philadelphia, Pennsylvania on Sunday November 7th 2010. (AP Photo/Brian Garfinkel)

New Orleans Saints defensive end Cameron Jordan (94) causes Tampa Bay Buccaneers quarterback Josh Freeman (5) to fumble during an NFL football game at Raymond James Stadium on Sunday, Oct. 21, 2012 in Tampa, Fla. The Saints won 35 - 28. (Perry Knotts/NFL)

Tampa Bay Buccaneers quarterback Josh Freeman (5) celebrates a touchdown during an NFL football game against the New Orleans Saints at Raymond James Stadium on Sunday, Oct. 21, 2012 in Tampa, Fla. The Saints won 35 - 28. (Perry Knotts/NFL)

INDIANAPOLIS, IN - AUGUST 15: A detail view of an Indianapolis Colts throwback helmet during the game between the San Francisco 49ers against the Indianapolis Colts during the preseason game at Lucas Oil Stadium on August 15, 2010 in Indianapolis, Indiana. The 49ers defeated the Colts 37-17. (AP Photo/Scott Boehm)

New England Patriots quarterback Tom Brady (12) in action against the New York Jets October 21,2012 at Gillette Stadium in Foxboro, Massachusetts. The Patriots defeated the Jets 29-26 in overtime. (AP Photo/Damian Strohmeyer)

Tampa Bay Buccaneers Mason Foster (59) enters the field in an NFL football game against the New Orleans Saints at Raymond James Stadium on Oct. 21, 2012 in Tampa, Florida. (AP Photo/Tom DiPace)

Pittsburgh Steelers quarterback Byron Leftwich (4) scrambles for a touchdown during the first quarter of an NFL football game against the Baltimore Ravens in Pittsburgh, Sunday, Nov. 18, 2012. The Ravens won 13-10. (AP Photo/Gene J. Puskar)

Detroit Lions quarterback Joey Harrington scrambles November 28, 2002 at Ford Field in Detroit. The New England Patriots defeated the Lions 20 - 12 in a Thanksgiving Day game. (AP Photo / Al Messerschmidt)

Green Bay Packers running back Eddie Lacy (27) and guard T.J. Lang (70) celebrate a touchdown against the Cleveland Browns during an NFL football game Sunday, Oct. 20, 2013, in Green Bay, Wis. (AP Photo/Matt Ludtke)

Washington Redskins wide receiver Henry Ellard, left, runs past Atlanta Falcons safety Kevin Ross (36) on a 73-yard pass reception from Redskins quarterback John Friez for a second quarter touchdown at Washington's RFK Stadium, Sept. 25, 1994. (AP Photo/Doug Mills)

A Washington Redskins throwback design helmet is seen on top of a bag during the first half of an NFL football game against the Carolina Panthers Sunday, Nov. 4, 2012, in Landover, Md. (AP Photo/Nick Wass)