A robot server assembly for serving table tennis balls comprising a body defining an internal ball path, means for introducing balls into the internal ball path at the lower end of the body; a ball guide at the upper end of the back panel, a serving head assembly at the upper end of the body having a ball discharge tube in communication with the ball guide; a pair of opposed discharge wheel operatively associated with the discharge tube; a plurality of gears associated with the serving head; at least one servo motor associated with at least one of the gears to actuate rotation of the gear; whereby actuation of a least one of said gears affects 180 DEG rotation of the serving head about a longitudinal axis of the serving head, up and down movement of the serving head and side to side movement of the serving head.