Packers wide receiver Davante Adams was taken to the hospital after a vicious helmet-to-helmet hit from Bears linebacker Danny Trevathan on Thursday night.

Trevathan was penalized for unnecessary roughness on the play. Former NFL head of officials Mike Pereira tweeted that it was the first time in four years that a crown-of-the-helmet flag had been thrown against someone, adding that Trevathon should have been ejected.

After the game, referee John Hussey explained why Trevathan wasn't