The Badminton Court

The single field measures 13.40 m x 5.18 m, the double field 13.40 m x 6.10 m.
The net height is 1.55 m at the posts and 1.524 m in the middle of the net.
In this drawing means:
- Hatched area = single field
- Boundary of the outer lines = double field
- Line 1 = front serve limit for singles and doubles
- Line 2 = back service line, only valid as service limit in doubles
- Line 3 = center line, only applies to the serve
The serve
- The first right to serve is drawn by lot.
- The game begins with the serve (from the right), which is to be played into the diagonally opposite service court (see figure 1) or, in doubles, into the opponent's doubles service court (see figure 3).
- If the number of points is even, the server serves from the right, if the number of points is odd, from the left. The opponent's score is irrelevant.
- The serve must be executed from below. The entire ball (foot + feathers) must be below 1.15 m from the surface of the court at the moment of contact with the racket; an interruption in movement is considered a deception (uniform acceleration) (see figure 2).
- Each player has the right to serve as long as he wins the rallies and collects points. If he loses a rally, the opponent receives a point and the right to serve.
- If the ball touches the edge of the net during the serve and falls correctly into the service court, play continues as normal. There is no replay
- If the serve is successful, the rally is played until one player makes a mistake.


The counting method
- With the rally point counting method, one point is awarded for each rally.
- Two sets up to 21 points are played in all disciplines - men's singles, women's singles, men's doubles, women's doubles and mixed.
- There is a one-minute break within each set when the leading team has reached 11 points.
- From a score of 20:20, a two-point lead must be achieved. At 29:29, the next rally is decisive. The closest score is therefore 30:29.
- As the server, you receive a point when you win the rally, as the returner you receive a point and the right to serve for the next rally. The side that won the previous rally always serves.
- After the first set, the players switch sides of the court. There is a two-minute break.
- If there is still no winner after two sets, a third set is played after a further 2-minute break. In the third set, the sides are changed again. During all these breaks, players are allowed to leave the court and the area around the court. However, to ensure that the break is not extended in contravention of the rules, the player must be back on the court no later than 20 seconds before play resumes.
- A coach/supervisor may only sit behind the player and must therefore always change sides with the player. Coaching is prohibited as long as the ball is in play.
The double

Order of serving: The right to serve alternates between the players in the following order:
- First server at zero both (starts in the right service court)
- Partner of the first back hitter
- Partner of the first server
- First return, first serve, etc.
Point win on serve:
If the serving team wins the rally, the server continues to serve. He switches to the other service court and serves to the partner of the first returner. If he wins several points, he always switches between the right and left service court.
Important:
Winning a point on your own serve is the only situation after which the partners change positions.
Point win backstroke:
If the returning team wins the rally, it is awarded the point and the right to serve. The positions are not changed on either the losing or the winning side. The service court from which the serve is served after a change of serve is determined by the position in which the players were last standing. A change of position does not take place despite winning a point, as this only occurs after winning a point on one's own serve.