Badminton Rules and Regulations

Back Boundary: The rearmost boundary of the court is known as the baseline.
Singles Play: In singles, the playing area is between the baseline and the inner sidelines.
Doubles Play: In doubles, the playing area extends to the outer sidelines from the baseline.
Service Exception (Doubles): During service in doubles, the double service line acts as the rear boundary of the service box. It's shorter than the baseline.
Mnemonic:
- Singles court: long and narrow.
- Doubles court: long and wide, but short during service.

Underhand Serve: The serve must always be executed as an underhand stroke, meaning the racket head must point downwards.
Serving Position: A player's score dictates from which half of the court they must serve.
Initial Serve: At the start of the game, the serving player always serves from the right service court.
Net Contact: It is not a fault if the shuttle touches the net during service or play, provided it still lands within the correct boundaries.
Faults During Serve:
- It is a fault if the server or receiver touches the boundary lines of their respective service court during the serve.
- It is a fault if the shuttle does not land in the diagonally opposite service court.
Serving Based on Score:
- Even Score (0, 2, 4, etc.): Server serves from the right service court.
- Odd Score (1, 3, 5, etc.): Server serves from the left service court.

Point Award: The side winning a rally scores a point and gains the right to serve.

In addition to serving faults, the following are considered faults:
- Shuttle Landing Out: If the shuttle lands outside the boundaries of the court.
- Net Violations: If the shuttle goes through or under the net, fails to go over the net, or touches a player's body or clothing.
- Shuttle Contact: If the shuttle is not hit before it touches the ground.
- Player Contact with Net: If a player touches the net or its supports with their racket, body, or clothing while the shuttle is in play.

A badminton match consists of the best of three games (2 winning sets).
Each game is played to 21 points.
Winning a Set:
- If the score reaches 20-all, the side that gains a two-point lead wins the set.
- If the score reaches 29-all, the side that scores the 30th point wins the set.

After First Set: Teams switch sides after the first set. The team that won the first set serves first in the second set.
During Third Set: In the third set, teams switch sides when the leading team reaches 11 points.

Initial and Even Score: At the beginning of a set and when the server's score is even, they serve from the right service court.
Odd Score: When the server's score is odd, they serve from the left service court.
Winning the Rally as Server: If the server wins the rally, they score a point and continue serving, but from the opposite service court.
Winning the Rally as Receiver: If the receiver wins the rally, they score a point and gain the right to serve.

One Server Per Team: Only one server per team during their service turn.
Service Rotation: The right to serve alternates between players.
Initial and Even Score: At the start of a set and when the serving team's score is even, the server serves from the right service court.
Odd Score: When the serving team's score is odd, the server serves from the left service court.
Serving Team Wins Rally: If the serving team wins a rally, they score a point and the same server serves again, but from the other service court.
Receiving Team Wins Rally: If the receiving team wins a rally, they score a point and gain the right to serve. Players do not change their positions in this case.
Positioning: Players do not switch their respective service courts until they score a point as the serving team.
Double Hit Rule: The shuttle may only be hit once by a pair. If the shuttle is touched by both players, it's considered a fault.