21 points in a badminton game. Badminton adopts a 21-point system, that is, the first team to score 21 points wins, and 2 wins in 3 rounds. After the two sides are tied at 20 in each round, one side wins the round with a 2-point lead; if the two sides tie at 29 and one side leads by 1 point, the round is considered to be the winner. The badminton court is a rectangular court with a length of 13.40 meters, the width of the doubles court is 6.10 meters, and the width of the singles court is 5.18 meters. The width of each line on the court is 4 cm, and the measurement should be counted from the outer edge of the line.
Court boundaries are best drawn in white, yellow or other easily identifiable colors. In a badminton singles match, when a player hits the ball in the direction of the opponent, the ball should not fall beyond the red (including dark red and light red) area, otherwise it will be shown as out of bounds.
In badminton, the scorer has the right to serve. If the current score is odd, it will serve from the left; if the current score is even, it will be served from the right. In the third or only one game, when one team reaches 11 points first, the two sides switch fields.
The badminton net is 6.10 meters long and 76 cm wide, made of high-quality dark natural or man-made fibers, with a mesh size between 15-20 mm. Whether it is singles or doubles, the two net posts should stand at the midpoint of the sidelines of the doubles court, respectively.
