Hockey - field
Hockey, or field hockey as it is known in some parts of the world, is a team game of 11-a-side played by men and women. It is played with a stick and a ball and most often played on grass or synthetic surfaces.
Field of play
The field of play or pitch is rectangular, 91.4m long and 55m wide. All lines are 75mm wide, white and are part of the field of play. Sidelines mark the long perimeters, backlines mark the shorter perimeters. Goal lines are lines between the goal posts. A centre line is marked across the middle of the field. Lines known as 23m lines are marked across the field 22.9m from each backline. Circles are marked with lines 3.66m long inside the field around the goals and opposite of the centre of the backline. Penalty spots 150mm in diameter are marked in front of the centre of each goal 6.4m from the inner edge of the goal line. Flag posts between 1.2m and 1.5m in height are placed at each corner of the field.
The playing surface must extend at least 3m at the end and 2m at the sidelines. These are minimum requirements with the respective recommended areas being 4m plus 1m and 3m plus 1m (that is, a total of 5m at the ends and 4m at the sides of the field).
Goals are positioned outside of the field of play at the centre of and touching each backline. Two white, vertical goal posts 2.14m high are joined by a white, horizontal crossbar 3.66m wide. Sideboards 460mm high and 1.20m wide are placed at right angles to the goal line. Backboards 460mm high and 3.66m wide are placed at right angles to the sideboards and are fixed to the end of the sideboards. Nets are fitted loosely to the back of the goal posts and crossbar at intervals not more than 150mm.