Composition of teams
A maximum of eleven players from each team take part in play at any particular time during the match. Each team has a goalkeeper on the field or plays only with field players.
Field players who leave the field for injury treatment, refreshment, to change equipment or for some reason other than substitution are only permitted to re-enter between the 23 metres areas.
Match and result
A match consists of two periods of 35 minutes and a halftime interval of 5 minutes. The team scoring the most goals is the winner ; if no goals are scored, or if the teams score an equal number of goals, the match is drawn.
Method of scoring
A goal is scored when the ball is played within the circle by an attacker and does not travel outside the circle before passing completely over the goal-line and under the cross-bar.
A goal is scored if awarded as a result of a penalty stroke.
Penalties
Advantage: a penalty is awarded only when a player or team has been disadvantaged by an opponent breaking the Rules. If awarding a penalty is not an advantage to the team which did not break the Rules, play must continue.
(BOCOG)