Abstract: The present invention relates to an appartus for playing indoor baseball, indoor softball or indoor tee-ball which comprises an arena having a playing area provided, with a circuit defined by a plurality of bases including a home base. The area further having first and second zones wherein the second zone contains at least one base other than the home base, there being a position on a boundary of the first zone defining the points of closest approach of a fielder of the at least one base to the at least one base until such time as the ball is caused to move such that play is commenced in respect of a batter's individual facing of a respective delivery of the ball.