The "no Gretzky rule" typically refers to unique statistical anomalies or historical league adjustments inspired by his overwhelming dominance, such as fantasy sports leagues banning managers from drafting him because he routinely accumulated twice as many points as any other player, forcing commissioners to split him into separate goal and assist categories. In official NHL rulebooks, his era prompted stricter enforcement regarding fair play, protective equipment guidelines, and officiating standards to manage high-flying offensive tactics.