A game ball feeder for delivering balls to a game ball throwing machine. The game ball feeder includes a base, a support frame attached to the base, a drive mechanism attached to the support frame, and a support rod attached to the support frame. A rotatable ball housing operatively engages the support rod, is mounted in a substantially horizontal configuration, and includes a plurality of cylindrical shaped ball holding sections. Each ball holding section can include a wall defining an entry opening and an exit opening with the entry opening positioned vertically higher than the exit opening. A transfer path can be operatively attached to a support frame and aligned to accept a ball from one of the exit openings. Further, a ball indexing element can be shaped and positioned to control the movement of the balls within at least one of the ball holding sections.