Do any personal foul. Any time anyone grabs anywhere near the back of the shoulder pads, they call a horsecollar regardless of the actual rules or the specific forces the rule is intended to prevent. Hits to the head and roughing are insanely inconsistent, with very little correlation to what was preventable, where the actual contact was, or any alternate actual reasonable standard.
Do any personal foul. Any time anyone grabs anywhere near the back of the shoulder pads, they call a horsecollar regardless of the actual rules or the specific forces the rule is intended to prevent. Hits to the head and roughing are insanely inconsistent, with very little correlation to what was preventable, where the actual contact was, or any alternate actual reasonable standard.