Aaron Rome had to be thinking he was going to give his team a game-changing lift with a spectacular, mid-ice bodycheck on a top opposing player.

Well, the 27-year-old journeyman defenceman changed the game all right, but not for his team, the Vancouver Canucks.

Instead, Rome's vicious head shot that knocked first-line Boston forward Nathan Horton unconscious and sent him to the hospital may have been a historic moment that alters the course of a 2011 Stanley Cup final that has suddenly turned rather nasty.