- Bennet Omalu - Medical Examiner: Bennett, do you know the implications of what you're doing? If 10% of mothers in this country would begin to perceive football as a dangerous sport, that is the end of football.
- Ann McKee - Neuropathologist, BU CTE Center: In, like, 20 spots in his frontal lobe. He's 21. He's so young. You know, that changes the game to me... Because he'd never had a diagnosed concussion, Dr. McKee suspected Thomas might have gotten CTE from the everyday sub-concussive hits that are an inherent part of the game... Those sub-concussive hits, those hits that don't even rise to the level of what we call a concussion, or symptoms, just playing the game can be dangerous.
- Harry Carson - Author, Captain For Life: The human body was not created or built to play football. When you have force against force, you're going to have injuries. And I'm not talking about the knees and- you know, all of that stuff is a given. But from a neurological standpoint, you're going to have- you're going to have some brain trauma.
- Ann McKee - Neuropathologist, BU CTE Center: I had an 18-year-old at that time. You know that that brain is supposed to be pristine. The fact that it was there, and he was only playing high school level sports, I mean, I think that's a cause for concern.
- Harry Carson - Author, Captain For Life: From a physical risk standpoint, you know what you are doing when you sign your kid up, that he can hurt his knee, OK? But what you should know now is your child could develop a brain injury as a result of playing football. It's not just on the pro level, it's on every level of football. The question is, do you want it to be your child?
- Junior Seau: You have to sacrifice your body. You have to sacrifice years down the line. When we are 50, 40 years old, we probably won't be able to walk. That's the sacrifice that you take to play this game.
- Ann McKee - Neuropathologist, BU CTE Center: I think it's going to be a shockingly high percentage. I'm really wondering where this stops. I'm really wondering, on some level, if every single football player doesn't have this.