Basics * Each game consists of two 35 minute halves * Each team can field 11 players, including ten outfield players and a goalkeeper * Outfield players are broken into defenders, midfielders and attackers (the exact number of each varies depending on team strategy) * Each team carries six substitutes * Two umpires officiate the match Field Size * The field should be 100 yards long and 60 yards wide * The field should be divided by a center line and a 25-yard line on each side * A striking circle should be marked 16 yards from the goal posts * The goal cages should be 7 feet high, 12 feet wide, and 4 feet deep Gameplay * Players must pass or dribble the ball with the flat side of their stick * A goal is scored when a player shoots the ball in the net from within the striking circle * Players can’t shield the ball using their body or stick Overtime * If the score is tied after regulation the game goes to penalty strokes * In the penalty stroke competition, each team chooses five players to take alternate penalty shots Fouls * For most fouls, the team that is fouled is awarded a free hit * The fouled player receives control of the ball at the location of the foul * Opponents must start 5-yards away * If the foul is committed within the shooting circle, the attacking team receives a penalty corner (explained below) * Players receive a foul for doing any of the following: * Playing the ball with the rounded side of the stick * Shielding the ball with their body or stick * Charging, shoving, or tripping opposing players * Using their feet or legs to support their stick * Moving the ball with anything other than their stick * Interfering with an opponent’s stick Penalty Corner * A penalty corner is awarded for fouls inside the striking circle * All players must remain outside the striking circle until the ball is played * The ball is placed 10 yards from the goal post at the end line * The player performing the penalty corner passes the ball to a teammate at the top of the striking circle