[masraum]

Originally Posted by thingmon

I think he was hit in the neck by a ball. Damaged some nerves. The stuttering started after that.

Yeah, I saw/heard him say that in a video, I think the AGT video. But in the Ted talk, he made it sound like it was due to the concussion (hit in the throat by a softball, and then fell back and hit his head). So those two videos left me unsure if it was due to the hit in the throat or the concussion (which both happened within seconds of each other). And now there are times when he almost has no stutter at all. (like the Ted talk).