Abstract: A ball throwing machine with oscillating capability is provided wherein the machine has a single shaft which rotates within a tube having bearings therein and wherein said tube is supported at only a single place near the center of the tube. The mechanism for oscillating the ball throwing machine is caused to rotate by the same mechanism that causes the throwing arm, which is directly connected to the shaft, to rotate. The oscillating mechanism drives a cam. A cam follower, which is connected to the throwing machine, is spring biased against the cam. As the cam rotates the cam follower and the throwing machine will be oscillated.