Lead: Table tennis fans, if you want to know the rules of table tennis singles, read the following points after me so that fans can have a formal table tennis singles match with their friends.
1. Competition system: the competition adopts the elimination system, and the winner is decided in the first round (each round 1 1 ball), and the rematch and final adopt the best of three sets system.
Second, the rules of drawing lots by groups: the first round of competition adopts the method of drawing lots by groups. If a person has bye, he will go straight to the next round.
After the first round, the winners of the first round will be regrouped and drawn from the digital numbers. The winner successfully advanced to the next round, and those who had a bye directly advanced.
Third, choose the right to serve and orientation: before the start of the game, both sides guess the right to serve, the winner chooses to serve or receive the service, the receiver gets the choice of venue, and the service venue is fixed before the end of the game;
Four, serve system: serve five balls for the legal system, each game, each person only serves five balls, exchange the ball right immediately after serving, and so on until the end of the game. The winner is the player who scores 1 1 per game, but after the scores of both sides reach 10, the winner is the first two points. After the 10 draw, both sides take turns to serve, and each person only serves 1 ball once.
Fifth, the punishment is meticulous.
1, table tennis is valid when serving;
2. Don't block the serve, throw the ball up;
3. When table tennis serves, you should first touch the server's desktop, and then touch the receiver's desktop. Those who don't touch the table are dead balls, and those who catch the ball get one point;
When serving, table tennis touches the net and lands on the receiver's table. If the serve is invalid, the two sides will not score points and serve again;
5. When serving, the table tennis first touches the server's desktop, not the net, and touches the corner of the receiver's desktop, which is a good ball and the ball is effective;
6. During the competition, table tennis hits the net as a good ball and is effective;
7. In the game, table tennis hits the rack, which is a dead ball, and the opponent scores one point;
8. In the game, table tennis touches the net twice in a row (it doesn't land on the table tennis table after touching the net, but touches the net again), which is a dead ball, and the opponent scores one point;
9. In the game, the opponent touches the desktop with a non-grip racket, and the opponent scores one point, and the confrontation is over;
10, before the opponent catches the ball in the game, all parts of his body touch the table to move it, and the opponent scores one point, and the confrontation is over;
Six, the final interpretation of the rules of the game belongs to the table tennis referee group.
Calculation of the number of rounds in a single round-robin competition
1. If the number of teams is even, the number of rounds is the number of teams minus 1. For example, if 8 teams participate in the competition, the number of rounds is 8- 1=7.
2. If the number of teams is odd, the number of rounds is equal to the number of teams. For example, if five teams participate in the competition, it will take five rounds.
The purpose of calculating the number of rounds is to calculate the total time required for the game. For example, there are seven participants in the competition, and the number of rounds is seven. If there is a two-day break in the middle of the game, the total time of the game is nine days. Calculation of the number of single cycle games.
Calculation formula of the number of single-cycle games
S=N(N- 1)/2, that is, the number of teams * (the number of teams-1)/2 For example, there are 8 teams, and the total number of games is: S=8*(8- 1)/2=28. The purpose of statistical competition is to calculate the needs of the competition.
Arrangement of single round robin
1. No matter whether the number of teams is even or odd, they should be arranged in even numbers.
2. If it is odd, can you make up one? 0? Number, what else? 0? There will be a goodbye for the teams that meet. Traditionally, the arrangement of single-cycle competition sequence is based on rotation method.
3, rotation method, suitable for teams who don't know each other's strength, so with the method of lottery positioning, it is likely that they will meet strong teams in the early stage and not be wonderful in the later stage of the game. ? Turn counterclockwise? This arrangement can keep the final game exciting, which is the usual arrangement.
Method of calculating ranking in single round robin competition
1. According to the international competition rules, if you win a game, you will get 2 points, if you lose a game, you will get 1 point, and if you don't play or finish the game, you will get 0 point. Our project will be graded according to the grading rules.
2. The group ranking is determined by stages according to the obtained games. If two or more teams in a group have the same score, they should be ranked according to the results of their corresponding games. First of all, we should calculate the score of the competition between them, and then calculate the winning-losing ratio, the number of games and the points of the individual competition (team competition) according to the needs until they become famous.
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