'Iron Mike' Webster
Video duration: 2:48
Pittsburgh Steelers center Mike Webster's favorite weapon was his head—and the hits kept on coming, for 17 years. In this excerpt from FRONTLINE's "League of Denial," Webster's peers describe what it was like to square off with "Iron Mike." Webster was diagnosed with chronic traumatic encephalopathy (CTE) after his death at age 50 in 2002.