When the whistle blew to start the game. Both players will have to use the tube. To blow a ping pong ball in the middle of the table to go to the goal to opponent .
When the Committee began to whistle blowing games players on the two sides to try to use tube. To blow a ping pong ball in the middle of the table and into your opponent's goal to have .
When the referee blew his whistle began to play the game both sides will have to try to use a tube to blow the ball table tennis table in the middle to the goal of your opponent,