Chris ##kins tells ESPN that ` ` I ` this is right for me '' San ` 49ers linebacker quits , citing struggles with concussion issues , says he wants to ` ` be proactive '' Some former players who suffer from conditions related to concussion have committed suicide .
Chris Borland tells ESPN that `` I know this is right for me '' San Francisco 49ers linebacker quits , citing players with concussion disorder , says he wants to `` be proactive '' Some former players who suffered from conditions related to concussions have committed suicide .