FILE - In this Nov. 14, 1983, file photo, Dallas Cowboys running back Tony Dorsett (33) is stopped after a two-yard gain by St. Louis Cardinals safety Lee Nelson (38) and linebacker Charlie Baker (52) during the second quarter of an NFL football game in Irving, Texas. Dorsett is one of at least 300 former players suing the National Football League, claiming the NFL pressured them to play with concussions and other injuries and then failed to help them pay for health care in retirement to deal with those injuries.

FILE - In this Jan. 22, 1983, file photo, Dallas Cowboys Tony Dorsett takes a hard hit and fumbles the ball in first quarter of an NFL football game against the Washington Redskins in Washington. Dorsett is one of at least 300 former players suing the National Football League, claiming the NFL pressured them to play with concussions and other injuries and then failed to help them pay for health care in retirement to deal with those injuries.

In this image take from video shot on Wednesday, Jan. 25, 2012, Tony Dorsett, a retired Hall of Fame running back for the Dallas Cowboys, reads a text message while sitting in his home in suburban Dallas. Dorsett, 57, is one of at least 300 former players suing the National Football League, claiming the NFL pressured them to play with concussions and other injuries and then failed to help them pay for health care in retirement to deal with those injuries.

In this image take from video shot on Wednesday, Jan. 25, 2012, Tony Dorsett, a retired Hall of Fame running back for the Dallas Cowboys, listens to a reporters question in his home in suburban Dallas. Dorsett, 57, is one of at least 300 former players suing the National Football League, claiming the NFL pressured them to play with concussions and other injuries and then failed to help them pay for health care in retirement to deal with those injuries.

Dallas Cowboys defensive lineman Jay Ratliff (90), of the NFC, pulls down San Diego Chargers running back Ryan Mathews, of the AFC, during the second quarter of the NFL Pro Bowl football game at Aloha Stadium, Sunday, Jan. 29, 2012, in Honolulu.

Sam Sgroi, 7, reaches up to compare is hand with a hand mold of former Dallas Cowboys receiver Michael Irvin during the NFL Experience for Super Bowl XLVI, Saturday, Jan. 28, 2012, in Indianapolis. The New England Patriots will face the New York Giants on Feb. 5.

Dallas Cowboys outside linebacker DeMarcus Ware (94), of the NFC squad, signs autographs for the fans after practice for NFL football's Pro Bowl, at Joint Base Pearl Harbor-Hickam on Thursday, Jan. 26, 2012, in Honolulu.

ARLINGTON, TX - FILE: Head coach Jeff Fisher of the Tennessee Titans celebrates the Titans second touchdown of the game with the Dallas Cowboys at Cowboys Stadium on October 10, 2010 in Arlington, Texas. According to reports on January 13, 2012 Fisher will be the head coach of the St. Louis Rams. (Photo by Stephen Dunn/Getty Images)

ARLINGTON, TX - NOVEMBER 24: Head coach Tony Sparano of the Miami Dolphins leads his team against the Dallas Cowboys during the Thanksgiving Day game at Cowboys Stadium on November 24, 2011 in Arlington, Texas. According to reports January 11, 2012, the New York Jets have hired former Miami Dolphins coach Tony Sparano as their offensive coordinator. (Photo by Tom Pennington/Getty Images)

TAMPA, FL - FILE: Head coach Raheem Morris of the Tampa Bay Buccaneers looks at the scoreboard during the game against the Dallas Cowboys at Raymond James Stadium on December 17, 2011 in Tampa, Florida. According to reports January 2, 2012, the Tampa Bay Buccaneers have fired head coach Raheem Morris. (Photo by J. Meric/Getty Images)

EAST RUTHERFORD, NJ - JANUARY 01: Jason Pierre-Paul #90 of the New York Giants reacts while playing against the Dallas Cowboys at MetLife Stadium on January 1, 2012 in East Rutherford, New Jersey. (Photo by Al Bello/Getty Images)

EAST RUTHERFORD, NJ - JANUARY 01: Jason Pierre-Paul #90 of the New York Giants reacts while playing against the Dallas Cowboys at MetLife Stadium on January 1, 2012 in East Rutherford, New Jersey. (Photo by Al Bello/Getty Images)

EAST RUTHERFORD, NJ - JANUARY 01: Kenny Phillips #21 of the New York Giants celebrates as he runs off of the field after defeating the Dallas Cowboys at MetLife Stadium on January 1, 2012 in East Rutherford, New Jersey. (Photo by Michael Heiman/Getty Images)

EAST RUTHERFORD, NJ - JANUARY 01: Head coach Tom Coughlin New York Giants hugs Kenny Phillips #21 after defeating the Dallas Cowboys at MetLife Stadium on January 1, 2012 in East Rutherford, New Jersey. (Photo by Michael Heiman/Getty Images)

EAST RUTHERFORD, NJ - JANUARY 01: Kenny Phillips #21 of the New York Giants celebrates as he runs off of the field after defeating the Dallas Cowboys at MetLife Stadium on January 1, 2012 in East Rutherford, New Jersey. (Photo by Michael Heiman/Getty Images)