The service is the shot that starts a play or rally. When the server is serving even points (e.g. 2, 4, 6), he must stand in the right-hand half of his service court; when the server is serving odd points, he must stand in the left-hand half. In doubles, the non-server can stand anywhere on his side of the net. The receiver must not move until the server has served. The server must: keep both players apart while serving, as must the receiver while receiving; be within the boundaries of the service court, touching no lines; hit the base of the shuttle first; make initial contact with the shuttle below the server's waist; have all the racket's head clearly below the hand that holds the shuttle at the moment of contact; serve in a continuous motion.