# If an attacking player establishes a significant position within the goal crease, so as to obstruct the goalkeeper's vision and impair his ability to defend his goal, and a goal is scored, the goal will be disallowed.
(NOTE) For this purpose, a player "establishes a significant position within the crease" when, in the Referee's judgment, his body, or a substantial portion thereof, is within the goal crease for more than an instantaneous period of time.