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Badminton section

Badminton rules, before the next rally starts.

Badminton moves too quickly to rebuild the rule after the shuttle is already back in play. The important questions are usually precise: which service court applies at this score, was the entire shuttle below the service-height limit, did both feet remain stationary, did the shuttle touch a line, did a player invade across the net, and was an interruption a fault or a let?

Five-minute guide

Badminton rules in five minutes

Rules baseline: Badminton World Federation Statutes, Section 4.1, Laws of Badminton, in force 26 April 2025, Version 5.0 (2). BWF competition regulations, alternative laws, Para badminton provisions, and national or local competition rules may add authorised variations.

  1. Objective: win rallies by landing the shuttle on or inside the opponent's court or by causing the opponent to commit a fault.
  2. Players, court, and equipment: singles has one player per side and uses the narrower singles sidelines; doubles has two and uses the wider doubles sidelines. The lines form part of the areas they define. BWF Laws 2–5 separately control rackets and shuttle specifications, while the detailed guide covers shuttle speed testing and approved-shuttle rules.
  3. How play begins: a toss decides the first choice of serving or receiving, or starting end. The other side then takes the remaining choice.
  4. How a rally begins: the server and receiver stand in diagonally opposite service courts. Under the standard BWF service law, the whole shuttle must be below 1.15 metres when struck, the initial contact must be with its base, and the racket movement must continue forwards.
  5. Scoring: each rally awards one point. A game is normally first to 21; at 20-all a side must lead by two, but at 29-all the side scoring the 30th point wins.
  6. Match and winner: a match is normally best of three games unless otherwise arranged. The side winning a game serves first in the next game.
  7. Service courts: the serving side uses the right court when its score is zero or even and the left when its score is odd. The detailed player sequence differs between singles and doubles.
  8. Main faults: a shuttle landing out, failing to cross the net, touching a player, being carried or illegally hit twice, player net contact, illegal invasion, obstruction, deliberate distraction, or an incorrect service ends the rally against the offending side.
  9. Lets and restarts: a let cancels play since the last service and the same server serves again. Examples include serving before the receiver is ready, certain simultaneous service faults, a disintegrating shuttle, or an unforeseen accidental situation.
  10. Go deeper: start with warm-up, toss, and choice-of-ends rules, court dimensions and boundary lines, in-or-out and line-call rules, line-call challenges and instant review, officials and their signals, serving rules and service faults, scoring and service order, intervals, end changes, and continuous play, delays, time-wasting, and readiness, hindrance, distraction, and coaching, or misconduct and penalty cards, then use the edge-case guides for net invasion, double hits, a shuttle caught on the net, receiver readiness, and venue obstructions.
Rules library

Browse Badminton rules by topic

20 plain-English explainers, grouped by the kind of decision you need to settle.

Essentials and setup

Players, playing areas, equipment, positions, and the basic structure of the sport.

Badminton Court Dimensions and Boundary Lines

Badminton court dimensions explained: singles and doubles widths, service lines, line calls, net height, and BWF court variations.

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Badminton Doubles Positioning and Partner Rotation Rules

Badminton doubles positioning explained: service courts, when partners rotate, who serves and receives, free movement during rallies, and court-error corrections.

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Badminton Racket, Shuttlecock, and Equipment Rules

BWF badminton equipment rules explained: legal racket and string-bed dimensions, feather and synthetic shuttle specifications, speed testing, damage, and compliance.

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Scoring and match formats

How points, goals, results, tied contests, and competition formats are decided.

Badminton Scoring and Singles/Doubles Service Order

Badminton scoring and service order explained: games to 21, 20-all and 29-all, even and odd service courts, doubles rotation, service changes, and court errors.

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Fouls, penalties, and conduct

Illegal contact, violations, cards, discipline, and how sanctions are applied.

Badminton Hindrance, Distraction, and Coaching Rules

Badminton hindrance and coaching rules explained: player obstruction, deliberate distraction, legal advice, coach-caused lets, and umpire enforcement.

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Badminton Player Misconduct and Penalty Card Rules

Badminton misconduct rules explained: yellow warnings, red-card faults, black-card disqualification, penalty points, doubles, and BWF procedure.

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Badminton Serving Rules and Service Faults

Badminton serving rules: readiness, diagonal courts, stationary feet, the 1.15-metre height limit, racket motion, missed serves, net cords, and faults.

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Ceiling and Venue Obstructions

Badminton ceiling and venue obstruction rules: default faults, walls and fixtures, local bye-laws, unforeseen situations, and pre-match checks.

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Shuttle Caught on the Net

When a badminton shuttle sticks on or in the net: service faults, post-return lets, ordinary net cords, replay procedure, and wheelchair exceptions.

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Timing, restarts, and reviews

Clocks, substitutions, restarts, replay systems, reviews, and official procedure.

Badminton Delays, Time-Wasting, and Readiness Rules

Badminton delay and readiness rules: towelling, drinks, court wiping, the 25-second Time Clock, injuries, receiver delay, and misconduct penalties.

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Badminton Line Call Challenges and Instant Review Rules

Badminton line-call challenges explained: when to challenge, two failed challenges per game, successful reviews, No Decision, unsighted calls, and IRS errors.

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Play and decisions

The live-play rulings, sequences, and judgment calls that decide what happens next.

Badminton Intervals, Change of Ends, and Continuous Play Rules

Badminton interval and change-of-ends rules: the 60- and 120-second limits, deciding-game switch at 11, continuous play, delays, and penalties.

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Badminton Officials, Umpire Signals, and Line Judge Rules

Badminton officials explained: Referee, Umpire, service judge and line judge duties, signals, factual decisions, overruling, appeals, and unsighted calls.

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Badminton Shuttle In or Out and Line Call Rules

Badminton in-or-out rules explained: line contact, active singles and doubles boundaries, officials, unsighted calls, overruling, and video challenges.

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Badminton Shuttle Speed Testing and Approved Shuttle Rules

BWF badminton shuttle speed rules explained: the Law 3 court test, correct landing zone, fast and slow results, approved models, selection, changes, and officials.

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Badminton Shuttle Touches a Player or Clothing Rules

When a badminton shuttle hits a player, hand, hair, shoe, or clothing: the BWF fault, out-bound shuttles, doubles, service, and Para badminton.

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Badminton Warm-Up, Coin Toss, and Choice of Ends Rules

Badminton pre-match rules explained: the BWF toss choices, who serves or receives first, choice of starting end, and the timed two-minute warm-up.

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Double Hits and Continuous Strokes

Badminton double-hit rules explained: one-stroke frame-and-string contact, successive hits, partner contacts, catches, slings, and common mishits.

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Net Invasion and Follow-Through

Badminton net invasion explained: legal follow-through, contact over the net, touching the net, under-net interference, and obstruction faults.

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Receiver Not Ready and Service Lets

Badminton receiver-readiness rules: early serves, attempted returns, undue delay, service lets, replay procedure, and practical disputed scenarios.

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Core structure

What badminton rules are organizing

  • Service readiness: the server cannot rush an unready receiver, but a receiver who attempts a return is treated as ready.
  • Service geometry: score determines right or left, the serve travels diagonally, and singles and doubles use different side and rear service boundaries.
  • One clean flight: the shuttle must cross to the opponent's side and avoid the floor, ceiling, walls, player, clothing, and outside objects while in play.
  • Legal racket contact: the law distinguishes one continuous stroke, an illegal catch or sling, successive contacts by partners, and the narrow allowance where the shuttle contacts racket head and strings in one stroke.
  • Space around the net: a legal follow-through can cross above the net after initial contact on the striker's side, but obstruction, net contact, and interfering invasion remain faults.
Decision path

How to rule a badminton rally

  1. Confirm the score, serving side, correct server, correct receiver, and correct service courts.
  2. Check readiness and the service sequence from the first forward movement of the racket head until delivery.
  3. Follow the shuttle's first decisive contact: racket, net, line, floor, player, ceiling, wall, or outside object.
  4. If player contact near the net is disputed, separate initial shuttle contact, follow-through, net contact, invasion, obstruction, and distraction.
  5. Decide whether the event is a fault, a let, or simply the normal end of the rally, then award the point and update the server and court.
Broad principles

Rules that apply across standard BWF play

  • A line is in: because every line forms part of the area it defines, a shuttle touching the relevant boundary is not out.
  • There is no second serve: an incorrect service is a fault, and the rally point goes to the opponent.
  • A net-cord serve is not automatically replayed: if the serve otherwise satisfies Law 9 and lands in the correct service court, touching the net does not itself create a let.
  • Either side can score: badminton uses rally scoring, so the rally winner adds a point whether it served or received.
  • The existing score survives a service-court correction: under Law 12, an out-of-turn or wrong-court error is corrected when the shuttle is not in play without reversing completed rallies.
Competition differences

What can vary outside the core laws

  • Alternative scoring: BWF statutes contain authorised alternative laws, and a tournament must announce the format it is actually using.
  • Para badminton: court diagrams, equipment, service height, wheelchair movement, and class-specific provisions modify parts of the standard law.
  • Venue obstructions: a local badminton authority may make approved bye-laws for a shuttle touching an overhead or building obstruction.
  • Instant Review System: review availability and technical-official procedures depend on the competition rather than changing the underlying line standard.
  • Intervals and presentation: televised matches may use mandatory fixed interval durations within the limits set by Law 16.
Common misunderstandings

Where the tennis analogy fails

  • “A serve that clips the net is a let” imports the tennis rule. Badminton Law 14 does not create a let merely because a legal serve touches the net.
  • “The server gets another attempt” is wrong under standard BWF play. Missing the shuttle while attempting to serve or delivering an illegal service is a fault.
  • “Only the serving side can score” describes the former side-out system, not the current Law 7 rally-scoring baseline.
  • “Doubles partners swap sides whenever they win a rally” is incomplete. They change their respective service courts only when their side wins a point while serving.
  • “Crossing the plane of the net is always a fault” is too broad. A racket may follow the shuttle over the net after initial contact was made on the striker's side, provided no other fault occurs.
Teaching approach

Say the score before placing the players

For a service-order exercise, first state the score and serving side. Then identify the court from even or odd, the player entitled to serve, and the opponent entitled to receive. Trying to memorise positions without reconstructing those four facts is what makes doubles rotation feel arbitrary.

For a live-rally dispute, identify the earliest decisive event. A shuttle that has already touched the floor cannot be rescued by a later net touch, and an earlier player fault decides the rally before a later landing.

Official references

Where these rulings come from

  • BWF Statutes — the official document hub for the Laws, alternative laws, competition regulations, and technical-official instructions.
  • BWF Laws of Badminton, Section 4.1 — in force 26 April 2025, Version 5.0 (2), and the effective baseline for this section.