The Number of Players
A match is played by two teams, each consisting of not more than eleven players, one of whom is the goalkeeper. A match may not start if either team consists of fewer than seven players.
Up to a maximum of three substitutes may be used in any match played in an official competition organised under the auspices of FIFA, the confederations or the member associations.
The rules of the competition must state how many substitutes may be nominated, from three up to a maximum of seven.
The Method of Scoring
A goal is scored when the whole of the ball passes over the goal line, between the goalposts and under the crossbar, provided that no infringement of the Laws of the Game has been committed previously by the team scoring the goal.
When competition rules require there to be a winning team after a match or home-and-away tie, only the following procedures, which have been approved by the International F.A. Board, are permitted by Away goals rule, Extra time and Kicks from the penalty mark.
Fouls and Misconduct
A direct free kick is awarded to the opposing team if a player commits any of the following six offences in a manner considered by the referee to be careless, reckless or using excessive force:
kicks or attempts to kick an opponent
trips or attempts to trip an opponent
jumps at an opponent
charges an opponent
strikes or attempts to strike an opponent
pushes an opponent
The Penalty Kick
A penalty kick is awarded against a team that commits one of the ten offences for which a direct free kick is awarded, inside its own penalty area and while the ball is in play.
A goal may be scored directly from a penalty kick.
Additional time is allowed for a penalty kick to be taken at the end of each half or at the end of periods of extra time.
(BOCOG)