Check the format first
Start with the event’s scoring format. This guide covers BWF’s standard 21-point ruleset, including international tournaments in Denmark during 2026. It is not a universal guide to domestic or junior events: Denmark introduced 15-point games across domestic age groups from 1 July 2026, while retaining 21-point games for international tournaments through 2026. The announced international transition is in 2027. See Badminton Denmark’s format notice.
Follow the shuttle
Aim to land the shuttle inside the opponent’s court; boundary lines count as in. Each rally winner scores and serves next. Serve diagonally: right at an even serving score, left at odd. After the return, doubles partners may take either shot, but cannot hit successively.
A toss allocates opening choices. Games are best of three, normally to 21; at 20–20, lead by two, capped at 30. Thus 22–20 wins; 21–20 does not. There is no timed extra period or shoot-out.
See scoring and service order.
Listen alongside the scoreboard
Separate completed games from the current game’s points. The umpire announces the server’s score first: a hypothetical “8–6” means the server leads. “Service over” means service changes sides. Warm-up precedes the opening “Play”; listen for “Play” again after interruptions. Officials and calls explains more.
Why play stops
Intervals allow up to 60 seconds at 11 and 120 between games. Ends change between games and at 11 in the third.
Faults include hitting out, touching the net during play, or the shuttle touching clothing. A let replays the rally with the same server, for example when service precedes receiver readiness. Suspended play preserves the score.
See intervals and service lets.
| What you see | Meaning |
|---|---|
| Line judge extends both arms sideways | Out. |
| Line judge points to the line | In. |
| Line judge covers their eyes | Unsighted. |
| Yellow card | Misconduct warning. |
| Red card | Misconduct fault. |
| Black card | Disqualification decided by the Referee. |
A pause for a close line call
Where Instant Review operates, a player may immediately challenge a line decision. Do not assume every court has review. See line-call challenges and penalty cards.
The signal descriptions and procedures above follow BWF’s technical-official instructions.
Small glossary
Rally: one service-to-finish exchange. Let: replay. Fault: infringement.
Playing-law reference: BWF Laws of Badminton.
Sources
- BWF playing laws, Version 5.0 (2).
- BWF technical-official instructions, Version 8.0.
- Badminton Denmark: domestic and international scoring transition.
Rule editions and sources
- Badminton World Federation · Laws of Badminton, Section 4.1, Version 5.0 (2) · Standard 21-point singles and doubles; excludes Para badminton and alternative formats. — Badminton World Federation Statutes, Section 4.1 — Laws of Badminton, in force 26 April 2025, Version 5.0 (2): Law 1 and Diagrams A and D–F; Laws 7.3, 9.1, 11.2, 13.1 and 13.3.1, 14.2.6 and 14.3, 15 and 17.4–17.6
- Badminton World Federation · Instructions to Technical Officials, Section 4.1.1, Version 8.0 · Officiated BWF competition using the selected ruleset. — This page applies the Badminton World Federation Laws of Badminton, Version 5.0 (2), in force 26 April 2025 , especially Laws 9, 14 and 16. For officiated BWF-sanctioned competition it also applies the BWF Instructions to Technical Officials, Version 8.0, in force 17 November 2025 , especially Instructions 5.10, 5.11, 5.13, 5.14 and 5.17.