In the fourth quarter of the Pittsburgh Steelers' 14-3 win over the Cleveland Browns, Colt McCoy was struck helmet-to-helmet by none other than Steelers' linebacker James Harrison. Harrison, who has been the recipient of many NFL fines from the Commissioner's office during his career due to hits of the helmet-to-helmet variety, will almost certainly receive another after leading with the crown of his helmet on McCoy.
Here's video of the play in question:
It looked like McCoy was seriously injured at first, laying on the ground and moving nothing but his legs slightly side to side. McCoy was tended to by trainers on the field and was forced to leave the game. He'd only be out for two plays, though, as he returned on the same possession. Unfortunately, he threw it to the wrong team three times (one was reversed) in the final five minutes, including one in the end zone that killed any chance Cleveland had of an upset win over the Steelers.