positions on the ground

      " hockey positions are discussed, notions of fluidity are very common. Each team can be fielded with a maximum of 11 players and will typically arrange themselves into forwards, midfielders, and defense with players frequently moving between theses lines with the flow of play. Each team may also play with:"

* a goalkeeper who wears a different color shirt and full protective equipment comprising at least headgear, leg guards and kickers; this player is referred to in the rules as a goalkeeper; or

* a field player with goalkeeping privileges wearing a different color shirt and who may wear protective headgear (but not leg guards and kickers or other goalkeeping protective equipment) when inside their defending 23m area; they must wear protective headgear when defending a penalty corner or stroke; this player is referred to in the rules as a player with goalkeeping privileges; or

* Only field players; no player has goalkeeping privileges or wears a different color shirt; no player may wear protective headgear except a face mask when defending a penalty corner or stroke.