PHILADELPHIA - Allegations by thousands of former National Football League players that the NFL ignored the risks of brain injuries to players from repeated head impacts are not governed by union contracts as the NFL asserts and therefore should not be dismissed, the former players say in Oct. 31 briefs filed in a Pennsylvania federal court multidistrict litigation (In Re National Football League Players' Concussion Injury Litigation, No. 12-2323, E.D. Pa.). View related prior history, 2012 U.S. Dist. LEXIS 12827.