article_snippet: his becomes the most prominent NFL player to turn his back on a rich contract, a four-year deal worth just under $3million in Borland's case, over concerns about brain injuries.
article_snippet: A class-action lawsuit involving thousands of former players, filed in 2012, contended that the league hid the dangers of brain injury among players while profiting from the sport's violent physical contact.
article_snippet: In February, a U.S. judge refused to accept a proposed settlement between the NFL and former NFL players, including Jovan Belcher, Junior Seau, Ray Easterling and Dave Duerson, saying payment should be expanded for some players and families among other concerns.
highlights_snippet: A lawsuit  filed in 2012 contended that NFL hid dangers of brain injury among players while profiting from sport's violent physical contact .