출연진 14

1. 

   Will Lyman

   Himself - Narrator

2. Harry Carson

   Himself

3. Steve Fainaru

   Himself

4. 

   Mikey Collins

   Himself - University of Pittsburgh Medical Center

5. Bennett Omalu

   Himself - Medical Examiner

6. Ann McKee

   Herself - Neuropathologist, BU CTE Center

7. Stan Savran

   Himself - Pittsburgh Sports Reporter

8. Julian Bailes

   Himself - Team Physician, Steelers, 1988-97

9. Jim Otto

   Himself

10. Mike Webster

    Himself (archive footage)

11. 

    Steve Young

    Self

12. 

    Troy Aikman

    Self (archive footage)

13. Leigh Steinberg

    Self

14. Christopher Nowinski

    Self

제작진 7