Extras

FRONTLINE

Should the NFL be Afraid of Chris Borland?

Clip: S2013 Ep16 | 6m 9s

Chris Borland explains why he walked away from the NFL.

FRONTLINE

CTE in a 21-Year-Old

Clip: S2013 Ep16 | 2m 5s

Dr. Ann McKee discusses the diseased brain of 21-year-old football player Owen Thomas.

FRONTLINE

'Iron Mike' Webster

Preview: S2013 Ep16 | 2m 48s

Pittsburgh Steelers center Mike Webster's favorite weapon was his head.

FRONTLINE

"League of Denial: The NFL's Concussion Crisis" preview

Preview: S2013 Ep16 | 2m 15s

FRONTLINE reveals the hidden story of the NFL and brain injuries.

FRONTLINE

When Do You Trade on a Reporter's Tip?

Clip: S2013 Ep16 | 1m 16s

In a deposition, billionaire hedge fund manager Steven Cohen struggles to answer.