Abstract: Disclosed is an unusually light-weight, compact, self-contained, self-powered ball thrower adapted to be carried and transported in the trunk of a passenger vehicle. All rotary components are driven by miniature DC motors having permanent magnet stators to maximize lightness without sacrificing performance. The low power requirements of these motors is readily provided by an onboard AC to DC power converter or by a rechargeable storage battery. The housing is power-oscillated to vary lateral ball trajectory and the throwing wheels are tiltable to vary the vertical delivery trajectory. An ample capacity ball hopper collapses compactly when not in use and a special control circuit assures uniform ball velocity during closely spaced successive ball throwing cycles.