Abstract: A pitching system, such as a baseball batting practice system, is collapsible whereby it can be stored and transported on a small unit. The unit is releasably attachable to a towing vehicle, such as a pickup truck or the like. The system includes support poles, winding and reeling devices, netting and support wires all of which are stored on the storage unit. In the set up configuration, the system can be modified in three dimensions, including length, width and height, with one section having different dimensions from adjacent sections whereby the particular skill being practiced can be matched by the configuration of the system. The system is also disclosed for use in other sports, such as golf.