Green Bay Packers linebacker Clay Matthews celebrates during a game against the Chicago Bears at Lambeau Field in Green Bay, WI on January 2, 2011. (Todd Rosenberg/NFL)

Baltimore Ravens running back Ray Rice (27) celebrates his touchdown-run during the first half of an NFL football game against the New Orleans Saints in Baltimore, Sunday, Dec. 19, 2010. (AP Photo/Nick Wass)

Cincinnati Bengals wide receiver Terrell Owens makes a muscle after catching a five-yard touchdown pass in the second half of an NFL football game against the New Orleans Saints, Sunday, Dec. 5, 2010, in Cincinnati. New Orleans won 34-30. (AP Photo/David Kohl)

Detroit Lions wide receiver Calvin Johnson (81) celebrates his touchdown in the first half of the NFL football game against the Chicago Bears in Detroit, Sunday, Dec. 5, 2010. (AP Photo/Rick Osentoski)

Buffalo Bills' nose tackle Kyle Williams (95) reacts after tackling a Detroit Lions running back during the first half of an NFL football game in Orchard Park, N.Y., on Sunday, Nov. 14, 2010. (AP Photo/Mike Groll)

Green Bay Packers' Clay Matthews reacts to a sack during the first half of an NFL football game against the Dallas Cowboys Sunday, Nov. 7, 2010, in Green Bay, Wis. (AP Photo/Jeffrey Phelps)

New York Giants' Ahmad Bradshaw reacts after scoring against the Seattle Seahawks in the first half of an NFL football game, Sunday, Nov. 7, 2010, in Seattle. (AP Photo/Elaine Thompson)

Baltimore Ravens running back Ray Rice reacts to the crowd during his introduction before an NFL football game against the Miami Dolphins in Baltimore, Sunday, Nov. 7, 2010. (AP Photo/Nick Wass)

Washington Redskins linebacker Rocky McIntosh (52) celebrates after sacking Chicago Bears quarterback Jay Cutler at Soldier Field in Chicago, Illinois on October 24, 2010. (Todd Rosenberg/NFL)

Tennessee Titans linebacker Stephen Tulloch (55) plays against the Denver Broncos in the fourth quarter of an NFL football game on Sunday, Oct. 3, 2010, in Nashville, Tenn. The Broncos won 26-20. (AP Photo/Joe Howell)

St. Louis Rams linebacker James Laurinaitis celebrates after stopping Washington Redskins running back Clinton Portis for a 3-yard loss during the first quarter of an NFL football game Sunday, Sept. 26, 2010, in St. Louis. (AP Photo/Jeff Roberson)

Green Bay Packers' Clay Matthews celebrates during the second half of an NFL football game against the Buffalo Bills Sunday, Sept. 19, 2010, in Green Bay, Wis. (AP Photo/Jim Prisching)

Baltimore Ravens running back Ray Rice reacts to his touchdown on the fourth quarter during the NFL football game against the Cincinnati Bengals, Sunday, Oct. 11, 2009 in Baltimore. Cincinnati won 17 - 14.(AP Photo/Nick Wass)

TAMPA, FL - NOVEMBER 4: Wide receiver Joey Galloway #84 of the Tampa Bay Buccaneers shows some muscle after a touchdown catch against the Arizona Cardinals at the Raymond James Stadium on November 4, 2007 in Tampa, Florida. (Photo by Al Messerschmidt/Getty Images)

SEATTLE - SEPTEMBER 26: Ken Hamlin #26 of the Seattle Seahawks flexes his muscles after tackling Kevan Barlow of the San Francisco 49ers at Qwest Field on September 26, 2004 in Seattle, Washington. (Photo by Otto Greule Jr/Getty Images)

PITTSBURGH - JANUARY 23: Linebacker Joey Porter #55 of the Pittsburgh Steelers flexes his muscles after making a tackle for a loss against the New England Patriots in the AFC championship game at Heinz Field on January 23, 2005 in Pittsburgh, Pennsylvania. The Patriots defeated the Steelers 41-27. (Photo by Andy Lyons/Getty Images)

CLEVELAND - OCTOBER 6: Linebacker Ray Lewis #52 of the Baltimore Ravens flexes his muscles after a play against the Cleveland Browns in the first half on October 6, 2002 at Cleveland Browns Stadium in Cleveland, Ohio. The Ravens defeated the Browns 26-21. (Photo by Tom Pidgeon/Getty Images)

PITTSBURGH - OCTOBER 07: Willie Parker #39 of the Pittsburgh Steelers reacts to what he thought was a touchdown, but he was ruled out of bounds against the Seattle Seahawks on October 7, 2007 at Heinz Field in Pittsburgh, Pennsylvania. The Steelers won 21-0. (Photo by Rick Stewart/Getty Images)

SEATTLE - SEPTEMBER 21: Wide Receiver Koren Robinson #81 of the Seattle Seahawks flexes his muscles in front of teammate running back Shaun Alexander #37 after Robinson scored the winning touchdown against the St. Louis Rams at Seahawks Stadium on September 21, 2003 in Seattle, Washington. The Seahawks defeated the Rams 24-23. (Photo by Otto Greule Jr/Getty Images)

CINCINNATI - NOVEMBER 16: Cornerback Tory James #26 of the Cincinnati Bengals flexes his muscles during the game against the Kansas City Chiefs at Paul Brown Stadium on November 16, 2003 in Cincinnati, Ohio. The Bengals defeated the Chiefs 24-19. (Photo by Andy Lyons/Getty Images)

PHILADELPHIA - SEPTEMBER 20: Brian Dawkins #20 of the Philadelphia Eagles flexes his muscles after the Eagles stopped the Minnesota Vikings on a third and short in the first half at Lincoln Financial Field on September 20, 2004 in Philadelphia, Pennsylvania. (Photo by Ezra Shaw/Getty Images)

BATON ROUGE, LA - DECEMBER 18: Joe Horn #87 of the New Orleans Saints celebrates after Marlon McCree #27 of the Carolina Panthers was called for helmet to helmet contact on December 18, 2005 at Tiger Stadium in Baton Rouge, Louisiana. The Panthers defeated the Saints 27-10. (Photo by Chris Graythen/Getty Images)

DENVER - JULY 07: Wide receiver Javon Walker #84 of the Denver Broncos flexes his bicep at the start of practice during minicamp on July 7, 2006 at the Paul D. Bowlen Memorial Broncos Centre in the Dove Valley Business Park of Englewood, Colorado. Walker was acquired in an off-season trade with the Green Bay Packers. (Photo by Brian Bahr/Getty Images)

SEATTLE - NOVEMBER 12: Tight end Jerramy Stevens #86 of the Seattle Seahawks celebrates his touchdown reception against the St. Louis Rams at Qwest Field on November 12, 2006 in Seattle, Washington. The Seahawks won 24-22. (Photo by Otto Greule Jr/Getty Images)

OAKLAND, CA - AUGUST 11: Defensive lineman Bertrand Berry #92 of the Arizona Cardinals flexes his muscles against the Oakland Raiders on August 11, 2007 at McAfee Coliseum in Oakland, California. (Photo by Greg Trott/Getty Images)

SAN FRANCISCO - AUGUST 18: Wide receiver Jerry Porter #84 of the Oakland Raiders flexes his muscles prior to a preseason game against the San Francisco 49ers on August 18, 2007 at Monster Park in San Francisco, California. (Photo by Greg Trott/Getty Images)

SAN FRANCISCO - AUGUST 18: Wide receiver Jerry Porter #84 of the Oakland Raiders flexes his muscles prior to a preseason game against the San Francisco 49ers on August 18, 2007 at Monster Park in San Francisco, California. (Photo by Greg Trott/Getty Images)

SEATTLE - SEPTEMBER 23: Referee Ed Hochuli signals during the Seattle Seahawks game against the Cincinnati Bengals at Qwest Field on September 23, 2007 in Seattle, Washington. The Seahawks won 24-21. (Photo by Otto Greule Jr/Getty Images)

Washington Redskins linebacker Brian Orakpo is seen during the first quarter of an NFL football game against the St. Louis Rams Sunday, Sept. 26, 2010, in St. Louis. (AP Photo/Jeff Roberson)