 It is commonly used to disallow an apparent goal, such as when the ball or puck has entered the net but should not count as a score due to some foul or infraction.Because the decision often depends on a subjective assessment by the referee, and especially if the score might be critical, such calls can be hotly contested.For fans of one of the teams involved, it may thus refer to a goal that was actually disallowed, or one that in their opinion should have been disallowed, but was not.