I'm sure there have been guys ...

I'm sure there have been guys who didn't realize they had a concussion and just kept playing. It's a violent game. The head injuries are the most dangerous to play with. We're trained to play no matter what. If you can run, and you're able to focus and know your responsibilities, you're usually out there playing. You wouldn't have enough players if no one played hurt. Especially if you're, like, on special teams, you're going to do everything you can to stay in the game.
 Mike Brown

Quotes from the same author

Rocky is a warrior, we've had a lot of great battles starting from when I was 16. He's a true team player, great fighter, and I have a ton of respect for him.
 Mike Brown
All the stars all the galaxies are in the same spot night after night after night. And Planet Nine, when we see it, will slowly move across the sky.
 Mike Brown