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.

St. Louis Rams head coach Steve Spagnuolo, left, and Philadelphia Eagles head coach Andy Reid shake hands following an NFL football game Sunday, Sept. 11, 2011 in St. Louis. The Eagles won 31-13.

EARTH CITY, MO - JANUARY 17: St. Louis Rams linebacker James Laurinaitis and quarterback Sam Bradford look on during a press conference to introduce new head coach Jeff Fisher at the Russell Training Center on January 17, 2012 in Earth City, Missouri. (Photo by Dilip Vishwanat/Getty Images)

EARTH CITY, MO - JANUARY 17: (L TO R) St. Louis Rams owner Stan Kroenke, new head coach Jeff Fisher and Executive Vice President of Football Operations & Chief Operating Officer Kevin Demoff take questions from the media during a press conference at the Russell Training Center on January 17, 2012 in Earth City, Missouri. (Photo by Dilip Vishwanat/Getty Images)

EARTH CITY, MO - JANUARY 17: New head coach Jeff Fisher of the St. Louis Rams addresses the media during a press conference at the Russell Training Center on January 17, 2012 in Earth City, Missouri. (Photo by Dilip Vishwanat/Getty Images)

EARTH CITY, MO - JANUARY 17: St. Louis Rams owner Stan Kroenke speaks during a press conference to introduce new head coach Jeff Fisher (center) as St. Louis Rams Executive Vice President of Football Operations & Chief Operating Officer Kevin Demoff looks on at the Russell Training Center on January 17, 2012 in Earth City, Missouri. (Photo by Dilip Vishwanat/Getty Images)