The paddle is made of wood or graphite, and has holes to reduce air friction.
At the start of play, one person must stand inside the service zone and strike the ball against the wall.
During the serve, the ball must cross the short line, and the server must remain in the service box.
A server has two chances to execute a valid serve, failing which the receiver wins the point and the players swap roles.
If a ball, deemed to have been on track to hit the wall, strikes the server upon return, the point is restarted.