Softball Diamond

The playing field is divided into fair territory and foul territory. Fair territory is further divided into the infield, the outfield, and the territory beyond the outfield fence.

The field is defined by foul lines that meet at a right angle at home plate. The minimum length of the baselines varies classification of play (see below for official measurements). A fence running between the baselines defines the limits of the field; this fence is equidistant from home plate at all points.

Behind home plate is a backstop. It must be between 25 and 30 feet (7.62 and 9.14 meters) behind home plate.

Home Plate is a five-sided figure, a combination of a rectangle and triangle, 17 in (43 cm) wide. The sides are 8.5 in (22 cm) long. The triangle fits into the right angle formed by the baselines.

Home plate is one corner of a diamond with bases at each corner. The bases other than home plate are 15 in (38 cm) square, of canvas or a similar material, and not more than 5 in (13 cm) thick. The bases are usually securely fastened to the ground. The bases are numbered counter clockwise as first base, second base, and third base. Often, but not always, outside first base (that is, in foul territory) and adjacent and connected to it there is a contrast-colored "double base" or "safety base". It is intended to prevent collisions between the first baseman and the runner. The runner runs for the foul portion of the double base after hitting the ball while the fielding team tries to throw the ball to the regular first base before the runner reaches the safety base. However, not all softball diamonds have these safety bases and they are much more common in women's softball than in men's. The double base is required in ISF championships.

The infield consists of the diamond and the adjacent space in which the infielders (see below) normally play. The outfield is the remaining space between the baselines and between the outfield fence and the infield. The infield is usually "skinned" (dirt), while the outfield has grass in regulation competitions.

Near the centre of the diamond is the pitching plate. In fast pitch, a skinned circle 8 feet (2.44 meters) in diameter known as the pitching circle is around the pitching plate.

A field is officially supposed to have a warning track between 15 and 12 feet (5 and 4 meters) from the outfield fence. However, if the game is being played on a field larger than required, no warning track is required before the temporary outfield fencing.

Located in foul territory outside both baselines are two Coach's Boxes. Each box is behind a line 15 feet (5 meters) long located 12 feet (3 meters) from each baseline.