Abstract: A ball toss up apparatus (10) has a generally flat body (12) within which is located a pivotal arm (26) and a pneumatic ram means (76, 78) for causing the arm to pivot. A ball is received in an opening (28) of the body above the arm, and the ball can be tossed vertically upwardly to a hitting zone of a batter by impact with the arm when pivoted by activation of the pneumatic ram means. The ball toss up apparatus also includes an air tank (32) for storage of pressurized air that is used in the activation of the pneumatic ram means. Air pressure within the air tank is continuously monitored by a pressure sensor (54) which cooperates with a pressure release solenoid (56) to reduce air pressure within the air tank when required.