15.1 serve illegal (Rule 11.1); 15.2 the players did not hit the ball when serving; 15.3 when serving the ball over the net and hung in the top line or stop in the net; 15.4 game: 15.4.1 The ball landed outside the court boundaries; 15.4.2 the ball from under the net or through the mesh; 15.4.3 ball but net; 15.4.4 the ball hit the roof, ceiling or around the walls; 15.4.5 the ball touches the athlete's body or clothing; 15.4.6 touches the ball off other people or objects (due to structural problems, if necessary, specify the local badminton badminton organizations can reach the building of the transitional provisions, but the national organizations have veto power); 15.5 the game, the racket and the ball is not hit by the initial point of contact network on this side (the striker hit the ball, the racket over the net with the ball can); 15.6 race in: 15.6.1 athletes racket, body or clothing touches the net or net supports; 15.6.2 the athlete's body from under the net racket or invade each other's field area, prevent the other party or make other distracting; 15.6.3 hinder each other, blocking each other as legitimate shot close to the net; 15.7 the game, the player deliberately spread the attention of any other act, such as shouting, posturing, etc.; 15.8 game: 15.8.1 ball, the ball caught and stuck in a shot on the towing was again followed; 15.8.2 the same player hit the ball two consecutive two swing; 15.8.3 the same side of the two players hit the ball straight again; 15.8.4 touches the ball after the athlete to continue to bat after the ferry flight; 15.9 athletes serious violation or repeated violation of the provisions of Rule 18.