In the modern game, the emphasis on shooting accuracy has largely eliminated any preference for extreme blade curves. However, hockey still retains illegal stick rules, which has become a cause of debate. The argument is that since blade curvature does not impart any significant advantage, that penalizing it is unnecessary. Additionally, coaches have used the "illegal equipment" penalty at key moments in games to win a power play, and in some cases, swing the momentum of an entire series, including the 1993 Stanley Cup Finals.