Ray Easterling

In this July, 1975, file photo, Atlanta Falcons safety Ray Easterling is shown. Easterling, who helped lead the team's vaunted defense in the 1970s and later filed a high-profile lawsuit against the NFL targeting the league's handling of concussion-related injuries, committed suicide on April 19, 2012, in Richmond, Va. He was 62. After his career, he suffered from dementia, depression and insomnia, according to his wife, Mary Ann. Tests revealed that Easterling suffered from CTE.

Credit: AP Photo/File