Abstract: At improved centrifugal batting practice machine of the type having a tethered ball that is repeatedly revolved past a hitter by a generally horizontal rotating arm is disclosed. The rotating arm is mechanically coupled to a vertically disposed, motor-driven shaft within a vertical frame that is fixedly attached to a base support. A height adjustment mechanism is interposed between the motor-driven shaft and the rotating arm to permit incremental adjustment thereof in a vertical plane such that the ball is presented to a batter at the desired vertical height. The batting practice machine includes functional features that produce a random pattern in the pitches delivered by batter. In one embodiment the batting practice machine is placed in a condition of imbalance by the removal of detachable pads or feet from the base support to produce a random pattern in the pitches.