A base for a basketball support pole comprising, in combination, a plurality of walls arranged at an angle to each other and forming a polyhedron shaped body, support structure within the body defining an elongated opening extending into the body at an angle to the vertical and for receiving a support pole, structure for securing the pole in the opening against rotation about the elongated axis of the pole and against withdrawal from the opening, structure within the body defining a ballast receiving enclosure, and ballast within the ballast receiving enclosure.