New England Patriots nose tackle Vince Wilfork (75) runs over cornerback Devin McCourty (32) with the football after intercepting a pass as San Diego Chargers running back Mike Tolbert (35) reaches out to bring him down in the second quarter of an NFL fooball game Foxborough, Mass., Sunday, Sept. 18, 2011. (AP Photo/Charles Krupa)

Chicago Bears' Keith Traylor runs with an interception 67 yards as Jacksonville Jaguars' Brad Meester (63) and quarterback Mark Brunell chase him in the fourth quarter Sunday, Jan. 6, 2002 in Chicago.(AP Photo/Ted S. Warren)

Indianapolis Colts defensive tackle Dan Klecko celebrates a touchdown reception from quarterback Peyton Manning in the first quarter of NFL football action against the Miami Dolphins in Indianapolis, Sunday, Dec. 31, 2006. (AP Photo/AJ Mast)

Pittsburgh Steelers running back Jerome Bettis carries the ball during their NFL divisional playoff football game against the Indianapolis Colts, Sunday, Jan. 15, 2006, in Indianapolis. The Steelers take on the Seattle Seahawks in Super Bowl XL on Sunday, Feb. 5, 2006 in Detroit. (AP Photo/Darron Cummings)

New England Patriots offensive lineman Dan Connolly (63) fends off Green Bay Packers safety Charlie Peprah, center, as he returns a kick off 71 yards during an NFL football game in Foxborough, Mass. The Patriots won 31-27. At right is Patriots safety Sergio Brown. The run is believed to be the NFL's longest return by an offensive lineman. (AP Photo/Tim Cook)

Green Bay Packers defensive tackle B.J. Raji (90) reacts as he crosses the goal line with a touchdown after intercepting against the Chicago Bears during the second half of the NFC Championship NFL football game Sunday, Jan. 23, 2011, in Chicago. (AP Photo/Jim Prisching)

Washington Redskins linebacker Ryan Kerrigan (91) grabs a batted down pass by New York Giants quarterback Eli Manning and carries it in for a touchdown during the second half of an NFL football game in Landover, Md., on Sunday, Sept. 11, 2011. (AP Photo/Cliff Owen)

Green Bay Packers fullback John Kuhn (30) celebrates after an 8-yard touchdown reception in the first the first half of an NFL divisional playoff football game against the New York Giants Sunday, Jan. 15, 2012, in Green Bay, Wis. The Giants won 37-20. (AP Photo/Jeffrey Phelps)

Tampa Bay Buccaneers defensive tackle Warren Sapp (99) runs into the endzone after intercepting Atlanta Falcons quarterback Jeff George's pass during the first quarter of Sunday's game Oct. 22, 1995 at Tampa Stadium. The Falcons beat Tampa Bay 24-21. (AP Photo/Peter Cosgrove)

Atlanta Falcons' Craig Heyward (34) celebrates a second half Falcons touchdown against the Detroit Lions at the Georgia Dome Sunday, Nov. 5, 1995, in Atlanta. Former NFL fullback Heyward died Saturday, May 27, 2006, after a 7 1/2-year fight with a recurring brain tumor, his son's high school football coach said. He was 39. (AP Photo/John Bazemore)

Chicago Bears' William "The Refrigerator" Perry spikes the ball after scoring a touchdown in Super Bowl XX in New Orleans, La. Perry spent more than a month at Aiken Regional Medical Center this spring, suffering from Guillain-Barre syndrome, a disease where the body's immune system attacks its peripheral nerves. (AP Photo/Amy Sancetta)

Kansas City Chiefs' running back Christian Okoye (35) is seen in action against the Miami Dolphins in Miami during the first round playoff game, Jan. 9, 1991. (AP Photo/Chris O'Meara)