U.S.

Associated Press
NFL lawyer Paul Clement speaks outside the U.S. Courthouse Tuesday, April 9, 2013, in Philadelphia after a hearing to determine whether the NFL faces years of litigation over concussion-related brain injuries. Thousands of former players have accused league officials of concealing what they knew about the risk of playing after a concussion. The lawsuits allege the league glorified violence as the game became a $9 billion-a-year industry. (AP Photo/Matt Rourke)

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