The Obstruction Rule: When Blocking Is a Fault

Last updated: July 2026 · Written by the team at Badminton House

That argument at the net usually starts with one question: did the defender block the shuttle, or did they block the striker's racket swing? In badminton, those are not the same thing. A defender can put a racket in the shuttle's path for a quick block, but cannot hold it so close to the net that it prevents an opponent's legal stroke, including a permitted follow-through after contact on the striker's side. This guide is for the messy doubles moments where both players are staring over the tape and nobody is sure whether the point should be replayed, faulted, or just played on.

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What BWF Law 13.4.4 Says About Obstruction

Under BWF Law 13.4.4, it is a fault if a player “obstructs an opponent, i.e. prevents an opponent from making a legal stroke where the shuttle is followed over the net.” In plain match language, you cannot place your racket, body, or position so close to the net that your opponent is stopped from completing a stroke they are legally allowed to make.

The timing matters. Law 13.4 faults, including obstruction, apply only while the shuttle is in play. So the question is not simply, “Was a racket near the net?” The real question is: during the rally, did that racket prevent a legal stroke where the striker was entitled to follow the shuttle over the net after contact on their own side?

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The Badminton Obstruction Rule at the Net: Stroke vs. Shot

Most net disputes become clearer if you separate the shot from the stroke. The shot is the shuttle’s flight path. The stroke is the opponent’s racket movement as they play the shuttle. You are allowed to put your racket in the shuttle’s path; you are not allowed to put your racket where it prevents the opponent from making a legal stroke.

That means a quick defensive racket-block at the net can be legal. If your racket is on your own side of the net when the shuttle hits it, you have blocked the shot, not necessarily the player. The problem starts when your racket is so close to the net, or positioned across it, that the opponent cannot complete a lawful racket action without striking your racket or being forced to stop their swing.

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Why Legal Follow-Through Changes the Call

Law 13.4.2 is the reason obstruction at the net can feel counterintuitive. Crossing over the net with your racket is normally a fault, but there is an important exception: after you first contact the shuttle on your own side, your racket may follow the shuttle over the net as part of the same stroke.

That legal follow-through is protected. If your opponent places a racket so close to the net that your normal follow-through would be blocked, or you would be forced to hit their racket to complete the stroke, the obstruction fault goes against them and you win the rally.

In doubles, this is the practical warning: you may hold your racket up to cover the shuttle, but do not park it so close to the tape that it interferes with the striker’s swing.

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Related Net Faults People Confuse With Obstruction

Law 13.4.4 is the “don’t block the opponent’s legal stroke” rule, but two nearby net faults often get mixed into the same argument. First, Law 13.4.3 covers invading under the net with your racket or body in a way that obstructs or distracts the opponent. A player sliding under the net and interfering with the opponent’s play fits that separate under-net fault, not the normal over-net follow-through obstruction case.

Second, touching the net or posts during play is its own fault. If a player lunges in, wins the shuttle, but brushes the tape or post while the shuttle is still in play, the discussion is no longer about obstruction; it is a net-touch fault.

These calls are still eye-judged, even at high levels, so close rallies can feel subjective. For a wider rules refresher, see Badminton Rules and Scoring. For the attacking skill itself, read Badminton Net Kill Technique separately.

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Which Call Should You Make?

Use obstruction only when the opponent stops a legal stroke, not simply when they take away your preferred shot path.

Rules like obstruction are easiest to understand when you picture the racket path, not just the shuttle path. We play badminton ourselves, so if a net-play decision, racket setup, or technique question is still bugging you, contact us and we’ll help you think it through in plain language.