David Berding-USA TODAY Sports

This is why the NFL penalizes and fines players for leading with their helmets.

Check out Washington Redskins defender Ryan Anderson as he lays a vicious hit on Carolina Panthers tight end Greg Olsen during Sunday’s game.

It was about as ugly as it gets.

The Pro Bowl tight end appeared to be knocked out before ultimately heading to the medical tent to get checked for a concussion.

For his part, Anderson was ejected from the game. Given the severity of the hit, that makes sense.

Let’s just hope Olsen is fine. Scary stuff.