Twin Baskteball is revolutionary sports designed for the quadriplegic in Japan. The biggest feature of this sports is "twin" hoops. In addition to the regular wheelchair basketball hoop, there is a lower hoop set at 1.20m(3.94feet) for players who are unable to shoot for the normal basket.
The most important point of twinbaskeball is undersatanding each player's disability. Players are classified from 1.0 to 5.0 / 3 shooting method, normal, outside of the free throw circle, inside of the free throw circle. Each player has own role in the game.