Should the NFL be Afraid of Chris Borland?
Clip: Season 2013 Episode 16 | 6m 9s
NFL sensation Chris Borland was known as a fearless player, but after just one season he retired because he was afraid of head injuries. Now, Borland is known as the most dangerous man in football, a powerful voice in the NFL's growing concussion crisis.
Aired: 12/21/15Video has closed captioning.
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