Badminton Misconduct Rules: Warning, Fault, Disqualification

Last checked: August 2026 · Written by the player-led team at Badminton House

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What counts as misconduct on a badminton court

The Laws of Badminton define misconduct through four prohibitions: deliberately causing delay in or suspension of play, deliberately modifying or damaging the shuttle to change its speed or flight, behaving in an offensive or inappropriate manner, and misconduct not otherwise covered by the Laws. BWF Laws of Badminton, Law 16

Delay, advice and leaving-the-court offences sit under the same law and carry the same penalties, and that side of Law 16 is stricter than most players expect. Play is continuous apart from the fixed intervals (up to 60 seconds within a game when the leading score reaches 11, up to 120 seconds between games), play may never be delayed so a player can recover strength or wind or receive advice, and nobody may leave the court without the umpire's permission outside those intervals. The umpire is the sole judge of any delay.

The offensive-behaviour category is where cards most often appear. The standard explanations umpires attach to a card show what it covers in practice: "Do not shout at your opponent", "You must not scream so loudly", "Do not raise your fist towards your opponent(s)", "You must use your best effort" and "You must shake hands before celebrating" are all listed wordings. Slamming the shuttle away in anger or hurling a racket falls under the same law, through the shuttle-damage and offensive-behaviour clauses.

The catch-all fourth clause reaches beyond the court. Under the officiating instructions, breaches of the listed clauses of the BWF Players' Code of Conduct are treated as offences under that clause, so conduct rules from the wider tournament framework can be penalised through the same card ladder.

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How the yellow, red and black card ladder escalates

An umpire penalises misconduct in three steps. A first breach brings a yellow card and the call "warning for misconduct". A repeat offence, or a single flagrant one, brings a red card and "fault for misconduct". Disqualification is a black card, shown only after the tournament referee has decided it. BWF Instructions to Technical Officials, 5.17

The sequence is not always one rung at a time. The Laws let the umpire fault a side without any prior warning in cases of flagrant offence, and Law 13 makes flagrant, repeated or persistent offences under Law 16 a fault in their own right. A player who smashes a racket into the net cord in fury can meet a red card as the first card of the match.

Every red card also forces an escalation of oversight. The umpire must call the referee on court and report immediately, and the referee can intervene without being called in cases of flagrant misbehaviour. From that point the person deciding whether the match continues is no longer the person in the chair.

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What a misconduct fault does to the score

A misconduct fault is a real fault under the Laws of Badminton. The opposing side wins the rally and adds a point to its score, even though no shuttle was hit. If the offending side was serving, service passes as well, so one red card can swing both the score and the serve.

In doubles the penalty attaches to the side rather than to the player who lost their temper. Law 16 has the umpire warn the offending side, then fault the offending side if it has already been warned, so a partner's outburst puts the pair on a warning and the next offence by either player costs the pair a point. The announcement names the player or players; the scoreboard consequence lands on both.

The penalty follows a player into the breaks. Misconduct during an interval is treated exactly like misconduct during a game and is penalised immediately. A red card in the pause before a game even changes the wording that starts it: instead of the standard "second game, love all, play", the umpire announces the fault, says "service over" where appropriate, and calls the adjusted score before "play". The official vocabulary marks its game-start calls with precisely that exception. BWF Vocabulary for Technical Officials For how the 60-second and 120-second breaks themselves work, see our guide to badminton interval rules.

Timing decides whether a card costs anything on the scoreboard. A card shown on the field of play before "play" has been called at the start of the match has no effect on the score, yet it still counts: if the player offends again during the match, that earlier card feeds the escalation and the next step is a fault. The same holds at the other end of the match. Misconduct on the field of play after play has finished is penalised with the same calls and reported to the referee, so an outburst on the way off the court still reaches the record.

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What disqualification requires and what follows it

Only the tournament referee can disqualify a player; the umpire's own powers stop at the red card. The umpire faults the offending side and reports immediately to the referee, who decides whether the offence is serious enough for a black card and the call "disqualified for misconduct".

The consequences run far past the match. A player the referee disqualifies is out of every event of that tournament, and in team competitions out of all remaining team matches, though a doubles partner may continue in other events. The referee explains the decision on court once, and there is no further discussion or appeal. If a pair is disqualified during an interval, the umpire does not even wait for the interval to end before announcing it.

Cards also have a paper trail. Immediately after the tournament, the referee sends the governing body a report on withdrawals and on every yellow and red card, and that report can trigger further sanctions. A referee who saw the incident and judges the card wrongly given may leave it out, but a player should assume any card follows them off the court.

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How to respond to a card, and what replaces it at club level

If you are carded, walk to the chair when the umpire calls "come here", listen without arguing, and play the next rally. The umpire is the sole judge of delay, and once the referee has ruled, the instructions close every route: there is no further discussion or appeal.

Treat a yellow card as the last free step. Arguing extends the delay that may have earned the card in the first place, while a calm reset costs nothing. A practical routine is to acknowledge the umpire, take one breath at the back of the court, and rebuild focus on the next serve. If you believe a rule was misapplied rather than a fact misjudged, the moment to raise it is through the referee between games, not by stopping play.

Club nights run on a different mechanism. The Laws hand misconduct penalties to the umpire and appoint officials only "where appointed", and they expect players to make calls themselves when no umpire is present, so nobody at a self-officiated session holds cards. The same behaviour standards still apply through the venue and the organiser: persistent shouting, slammed rackets or deliberate stalling get handled as an etiquette and membership matter instead of a scoreboard one. Our guide to badminton court etiquette covers the expectations that do the card system's job at club level.