Associated Press
In this May 17, 2012, photo, former NFL linebacker George Koonce poses for a photo at Marquette University in Milwaukee. Koonce, with the help of his late wife, Tunisia, turned his life around after struggling with depression, inactivity, and suicidal tendencies after his football career ended following the 2000 season. Finishing his doctoral dissertation at Marquette was Koonce's tribute to Tunisia, who died of breast cancer in 2009, and he now is using his own personal struggles to fuel an academic study of the issues former players face when their careers are over. (AP Photo/Chris Jenkins)

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