An athlete agility-training system is disclosed. The system includes a frame and several of mounting plates. Each plate is removably secured to an associated position on the frame. The frame includes at least one athlete agility-training (or reaction-training) device removably secured to one of the plural mounting plates. Each plate includes a shank portion that extends from a device-mounting portion. The device-mounting portion is planar and substantially circular. A first end portion of the shank of the plate is unitary with a peripheral-edge portion of the substantially circular and planar device-mounting portion.