Cowboys LB concussed his teammate with a brutal helmet-to-helmet hit

Now that's what they call concussive.

Cowboys linebacker Sean Lee is known for his hard hitting.

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In Sunday's 30-16 win over the Packers, Lee attempted to hit receiver Jordy Nelson. Instead, he hit his teammate Morris Claiborne, and knocked him out of the game with a concussion.

Pretty sure Lee would've been ejected for targeting in college football.

(h/t Bro Bible)