A baseball field's diagram should include home plate, the other three bases, and the distance from home plate to both foul poles and the center field wall. Depending on the intended purpose of the diagram, other components may be needed, such as the distance from home plate to the backstop and both dugouts, the parts of the field that are or will be dirt, and the player positions.
Diagrams of baseball diamonds are used for two primary reasons. A scoring diagram, used for scorecards and broadcasts, includes the bases and player positions; in these cases, the dimensions of the field are not usually needed. For a construction diagram, or a blueprint for a proposed field, more details are needed and the field's dimensions are often drafted to scale. In addition to placement of the bases and pitcher's mound, the distance to each wall and foul pole is noted, as are the dimensions of the dirt area for the infield, pitcher's mound and warning track. Dugouts, on-deck circles, batter's boxes and coaching boxes are included, and in some cases, dimensions of spectator and concession areas are included as well. The best baseball diamond construction diagram sets also include a ground level diagram to ensure proper water drainage, irrigation, elevation of the pitcher's mound and wall and backstop dimensions.