Damn. He took a hard (illegal) head to head shot that the refs insisted was legal. Hopefully it's not a neck injury and he turns out okay...really tough to watch a young guy get hurt like that.
The guy left the ground and led with his helmet. That was the textbook definition of a personal foul. ****ing ****ty refs.
I guess the announcers were saying that because he was playing the ball and not looking at the receiver, that makes it a clean hit. I personally don't agree with that at all and I'm pretty sure the league will fine him in the coming days.