Players who start playing each game can quit the game and play the same game again, only to return to the original position. A substitute can only play once in each game and can only be replaced by the player he replaces.
Digital adjustment
According to the rules, 1 team at most 12 players, 1 coach, assistant coach and doctor.
Players' clothing must be uniform, and there are obvious numbers on the front and back of the coat.
The coach can give guidance during time-out and intermission.
Only the captain can ask the referee or ask for an explanation of the rules in the game.
Expand the data competition process
First, the preparation before the game:
The first referee presides over the lottery, and first chooses the right to serve and the ball area.
Second, the start process and stop of the game:
The first referee will stand at the end line of his own field after blowing the whistle, and stand in the original position when blowing the whistle again (the position table filled out before the game).
Third, the score:
A. After one side serves, the other side makes a catch mistake, fouls or the ball falls into the opponent's court, that is, the server scores and continues to serve;
B. If the server serves illegally or out of bounds, the opponent will score and change the service.
4. Suspension and substitution:
Each team has two timeouts and six substitution opportunities in each game. (required when making dead balls)
1. time-out: each team has two time-outs in each game; There is a technical pause every 8 minutes in the regular competition.
2. Substitution:
A, the main player can only quit the game once, and when he plays again in the same game, he can only return to the game to replace his player.
B, the substitute can only play once per game, and can replace any main player. The same game can only be replaced by the player he replaces.
Note: The player who started the game is the main force, and the other players are substitutes.
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