Advertisement49ers Linebacker Quits After 1 Season, Citing Safety ConcernsMarch 17, 2015Bill ChappellfacebookEmailSan Francisco 49ers linebacker Chris Borland (50) is seen here in a game last year against the New York Giants. Borland, who had two interceptions in that game, has announced that he is retiring from the NFL after his rookie season. (CSM/Landov)
