There are a lot of rules of the game of soccer. The most basic rule of soccer is that no player except the goalie is allowed to touch the ball with the arms or hands. Goalies may use their arms and hands only within the penalty area. In Internationals teams no one who has left the game is allowed to return. In the United States, the NCAA allows five substitutes who are allowed to leave and return to the game. The professional North Americas Soccer League permits three substitutes who are allowed to leave and reenter the game. Under International soccer rules , one referee and two linesmen officiate a game. In high school and college games, two referees are used.
Some of the basic rules, a corner kick is awarded to the opposing team when a player kicks the ball over his own goal line. For a corner kick, all opposing players must be at least 10 yards form the ball. There are two types of free kicks direct free kicks, awarded for nine fouls committed by the other team. Indirect free kicks are awarded for other violations made by the opposing team. Opposing players must be at least 10 yards from the ball for a free kick. A foul results in a direct or indirect free kick at the spot of the foul.
A goal kick occurs when a player kicks the ball over the opposing teams goal. The opposing team is awarded the goal kick. Heading the ball is when you strike it with your head. Penalty kicks is when an opposing player commits an intentional foul. All players except the kick's and the goalkeeper must stand outside the penalty area, at least 10 yards from the ball. A shoulders charge is the only body contact allowed. It occurs when two players press shoulders while attempting to gain possession of the ball. For a shoulder charge to be legal, players must be within playing distance of the ball and have at leave one foot on the ground. A team is awarded a throw - in when the ball goes over the sideline, last touched by an opponent. A player throws the ball in from over his or her head with both feet on the ground at the moment of release.
A referee may issue a player a warning (yellow card) for misconduct or eject a player (red card) for hard conduct, a serious foul or abusive language. A player is offside if he is closer to opponents goal line than two opponents are closer to the opponents goal line. Offside is determined by the players position at moment of the pass. A player is not offside when he or she receives a ball that bounces off a defender who had possession of the ball or comes at him directly from a goal kick, corner kick or throw in.