Rules and regulations provide the blueprint of the sport. Rules create a balanced and fair competition between teams and players. Rules and regulations are enforced by officials and referees. The governing bodies and leagues of the sports define the rules and what is allowed. Rules and regulations are important because they keep players safe and provide a level playing field. For example, the icing rule was added to NHL Ice Hockey after clever players found that hitting the puck to the other side of the ice wasted crucial time. You can find the rules of a sport in a published rulebook. Learning the rules to a sport is key to understanding the sport as a player, coach, or spectator.