rules of hockey

    The game is played between two teams of up to sixteen players, out of whom eleven are permitted to be on the pitch at any one time. The remaining five players, the substitutes, may be substituted in any combination, from one to five, an unlimited number of times in the course of a game. Substitutions are permitted at any point in the game, apart from between the award and end of a penalty corner; two exceptions to this rule is for injury or suspension of the defending goalkeeper, which is not allowed when playing with a field keep, or a player can exit the field, but you must wait until after the inserter touches the ball to put somebody back in.

Players are permitted to play the ball with the flat of the 'face side' and with the edges of the head and handle of the field hockey stick with the exception that, for reasons of safety, the ball may not be struck 'hard' with a forehand edge stroke, because of the difficulty of controlling the height and direction of the ball from that stroke.

The flat side is always on the "natural" side for a right-handed person swinging the stick at the ball from right to left. Left-handed sticks are rare, but available; however they are pointless as the rules forbid their use in a game. To make a strike at the ball with a left to right swing the player must present the flat of the 'face' of the stick to the ball by 'reversing' the stick head, i.e. by turning the handle through approximately 180°(while a reverse edge hit would turn the stick head through approximately 90° from the position of an upright forehand stoke with the 'face' of the stick head).

Edge hitting of the ball underwent a two-year "experimental period", twice the usual length of an "experimental trial" and is still a matter of some controversy within the sport. Ric Charlesworth, the current Australian coach, has been a strong critic of the unrestricted use of the reverse edge hit. The 'hard' forehand edge hit was banned after similar concerns were expressed about the ability of players to direct the ball accurately, but the reverse edge hit does appear to be more predictable and controllable than its counterpart.

Other rules include; no foot to ball contact, obstructing other players, high back swing, and no third party. If a player is dribbling the ball and either loses control and kicks the ball or another player interferes that player is not permitted to gain control and continue dribbling. The rules do not allow the person who kicked the ball to gain advantage from the kick, so the ball will automatically be passed on to the opposing team. Conversely, if no advantage is gained from kicking the ball, play should continue. Players may not obstruct another's chance of hitting the ball in any way. No shoving/using your body/stick to prevent advancement in the other team. Penalty for this is the opposing team receives the ball and if the problem continues, the player can be carded. While a player is taking a free hit or starting a corner the back swing of their hit cannot be too high for this is considered dangerous. Finally there may not be three players touching the ball at one time. Two players from opposing teams can battle for the ball, however if another player interferes it is considered third party and the ball automatically goes to the team who only had one player involved in the third party.