Philadelphia Eagles running back Brian Westbrook leaves the field with an injury in the second quarter of an NFL football game against the Pittsburgh Steelers, Sunday, Sept. 21, 2008, in Philadelphia. He...

Philadelphia Eagles running back Brian Westbrook leaves the field with an injury in the second quarter of an NFL football game against the Pittsburgh Steelers, Sunday, Sept. 21, 2008, in Philadelphia. He...

Philadelphia Eagles running back Brian Westbrook leaves the field with an injury in the second quarter of an NFL football game against the Pittsburgh Steelers, Sunday, Sept. 21, 2008, in Philadelphia. He...

...23: Osi Umenyiora #92 of the New York Giants leaves the game due to an injury during a preseason NFL game against the New York Jets at Giants Stadium in the Meadowlands August 23, 2008...

...of teammate Harry Williams prior to the Texans' NFL football game against the Tampa Bay Buccaneers, Thursday, Aug. 28, 2008, in Houston. Williams suffered a spinal injury during a game with the Dallas Cowboys on...

...receiver Harry Williams (86) is transported by medical staff after suffering an injury in the first quarter against Dallas Cowboys in an NFL pre-season football game, Friday, Aug. 22, 2008, in Irving, Texas. (AP...

...receiver Harry Williams (86) is transported by medical staff after suffering an injury in the first quarter against Dallas Cowboys in an NFL pre-season football game, Friday, Aug. 22, 2008, in Irving, Texas. (AP...

...the people closest to him said he should head for the NFL a year early, without running the risk of a debilitating injury while winding up his college career. But Laurinaitis said he just...

...Bills reserve tight end Kevin Everett lies on the field after a spinal injury during the second half of the NFL football game against the Denver Broncos at Ralph Wilson Stadium in Orchard Park...

...appeared before the committee for a hearing on the 'NFL Retirement System,' focusing on the current compensation system for retirees with claims of advanced injuries that became symptomatic after retiring from the NFL

...Oakland Raiders during the third quarter of an NFL football game in Oakland, Calif., Sunday, Oct. 21, 2007. Holmes saw limited play after returning from injury. Kansas City won 12-10

...to running back Adrian Peterson (29) during an NFL football game against the Minnesota Vikings at Soldier...cut three times, endured a season-ending knee injury in 2005 and rarely left the sideline a...

...Oct. 19, 2007. Urbanski is suing the National Football League, the Tennessee Titans and suspended football player Adam "Pacman" Jones, claiming they're responsible for his injuries, his lawyer said. (AP Photo/Jae C...

...appeared before the committee for a hearing on the 'NFL Retirement System,' focusing on the current compensation system for retirees with claims of advanced injuries that became symptomatic after retiring from the NFL

Buffalo Bills reserve tight end Kevin Everett lays on the field after an injury during the second half of the NFL football game against the Denver Broncos at Ralph Wilson Stadium in Orchard Park...