S32 Ep2: Should the NFL be Afraid of Chris Borland?

Aired: 12/21/2015 | 0:06:09 | Clip
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.