Each team consist of five blind payers , one sighted player and one defensive assistant. The sighted defensive player and the defensive assistant also serve as base coaches at second and third base when the defensive teame comes to bat. The defensive field of play is the area beyond the line between second and third base. Second base 165 feet from home plate. The distance between second base and third base and the distance between third base and home plate in 90 feet.
Second base is the base of origin for the defense.
All defensive eliminations are recorded at second base. Home plate, for the runner, is a line on 13 feet. The home run line is marked at 180 feet from home plate. In order for the batter the batted ball, to be ruled fair, it must go beyond the line between second and third base after having bounced at least one time. The batter runs around first base and attempts to reach second base.