Singles Badminton Rules: Court, Serve, and Scoring Explained Simply

Singles badminton is played one against one on a court that is long and narrow: you use the full length but only the inner sidelines. You serve diagonally, from the right service court when your score is even and the left when it is odd. Every rally scores a point, and the first player to 21 (win by 2, capped at 30) takes the game.

That is the short version. Below, Olaben walks through each rule in plain language, following the official Badminton World Federation (BWF) Laws of Badminton, so you can step on court knowing exactly where to stand, how to serve, and what counts as a fault.

The Singles Court: Long and Narrow

The badminton court is the same physical rectangle for singles and doubles, but the lines you use change. A full court is 13.4 m (44 ft) long and 6.1 m (20 ft) wide. In singles, you play the whole length but only the narrower width bounded by the inner sidelines.

Here is the practical difference:

• Sidelines: In singles, the inner sideline is your out-of-bounds edge. Anything landing between the inner and outer sideline is out. That side channel (called the doubles alley) belongs to doubles only.
• Back line: In singles, the back boundary line at the very rear of the court is live for the whole rally, including the serve. This is the opposite of doubles, where the serve must land before a shorter back line.

So the singles court is tall and slim, while the doubles court is short and wide (for serving) but uses the full width in rallies.

A quick memory trick: in singles, think “long and skinny.” You give up the side alleys but you gain the deep back corners. If you are still learning the layout, our basic badminton rules guide covers the full court from scratch.

Serving Rules in Singles

Serving is where singles differs most from what beginners expect. Two things decide where you stand: your own score and the fact that the serve always travels diagonally.

Where you stand. Your score, not your opponent’s, sets your service court.

• Even score (0, 2, 4, 6…): serve from the right service court.
• Odd score (1, 3, 5, 7…): serve from the left service court.

Since you start every game at 0, your first serve of the game is always from the right. Each time you win a point on your own serve, your score changes even to odd (or back), so you switch sides and serve again.

Where it goes. The serve is diagonal. From the right court you serve to the receiver’s right (your diagonal), and it must land in the service box beyond the short service line and inside the singles boundaries.

How you serve. BWF sets strict limits on the serving action:

• The serve must be underhand. At the moment you strike the shuttle, the whole shuttle must be below 1.15 m from the court surface (a fixed height BWF adopted in 2018).
• The racket shaft must point downward, and the racket must contact the base of the shuttle first.
• Both feet must have some part touching the floor and stay still until you strike. No walking, no jumping, no touching the lines.
• The receiver must also stand still until the serve is struck.

Unlike tennis, you get one serve in badminton. There is no second attempt, so a clean, legal serve matters. A relaxed grip helps here, which is why we put together a short guide on badminton grip basics.

Scoring: Rally to 21

Modern badminton uses rally scoring, so a point is won on every single rally no matter who served. This is the format BWF made standard back in 2006, and it is what you will see in every tournament today.

The rules:

• A match is best of three games.
• Each game is played to 21 points.
• You must win by 2. At 20-all, play continues until one player leads by two.
• Scoring is capped at 30. At 29-all, the very next point (the golden point) decides the game, so the winner reaches 30-29.
• The player who wins a rally scores the point and serves next. If you win a rally on your opponent’s serve, you take both the point and the serve.

You change ends after each game. In a deciding third game, you also switch ends when the leading score reaches 11. For a deeper walk-through with examples, see how badminton scoring works.

Common Faults in Singles

A fault ends the rally and gives the point to your opponent. The ones you will meet most often:

• Shuttle lands out. In singles, that means outside the inner sidelines or past the back boundary line.
• Shuttle fails to cross the net, or passes through or under it.
• Service faults: contact above 1.15 m, racket head above the hand, feet moving or touching a line, or serving to the wrong (non-diagonal) box.
• Touching the net with your racket, body, or clothing while the shuttle is in play.
• Reaching over the net to hit the shuttle. You may follow through over the net, but contact must happen on your side.
• Double hit: the shuttle is hit twice in a row by the same player, or it rests and is slung on the racket.
• Hitting the shuttle before it crosses to your side of the net.
• Shuttle touches the ceiling or fixtures (a fault under most venue rules).

Basic Singles Strategy

Singles is a game of space and stamina. You cover the whole court alone, so the goal is to make your opponent cover more of it than you do.

1. Move your opponent. Send the shuttle to the four corners: deep clears to the back, then drops or net shots to the front. Every time they sprint, you buy yourself time.
2. Return to center. After each shot, move back toward the middle base position (near the center, slightly behind the short service line). From there you can reach any corner in the fewest steps.
3. Use the full court. In singles the court is long, so a deep, high clear to the back corner is one of your best tools. It pushes your opponent off the net and resets the rally when you are under pressure.
4. Serve with purpose. A high, deep serve to the back is the classic singles opener because it drives your opponent to the rear and opens the front of their court.
5. Play the percentages. Steady, well-placed shots win more singles points than flashy smashes that leave you out of position.

Good footwork depends on relaxed, repeatable technique. Our guide to basic badminton techniques for beginners covers the grips, footwork, and swings that make these tactics work. And if you mostly play two-a-side, the rules shift, so compare with our doubles badminton rules guide.

Comfortable, flexible kit helps too. Browse our best sellers for pieces that move with you through every lunge and jump.

Frequently Asked Questions

What are the boundaries for singles badminton?

Singles uses the full length of the court (13.4 m) but only the width between the inner sidelines (5.18 m). The outer side alleys are out of bounds. The back boundary line is live for both the serve and the rally, unlike doubles.

Do you serve from the right or left in singles?

It depends on your own score. Serve from the right service court when your score is even (0, 2, 4…) and from the left when it is odd (1, 3, 5…). The serve always travels diagonally.

How many points do you need to win a singles game?

You need 21 points and must win by 2. If the score reaches 29-all, the next point (at 30) wins. A match is the best of three games.

How high can you serve in badminton?

At the moment of contact, the entire shuttle must be below 1.15 m from the court surface. This fixed height replaced the old “below the lowest rib” rule in 2018 to make the serve fairer to judge.

Is the serve underhand in singles badminton?

Yes. The serve must be underhand, the racket shaft must point downward, and you must hit the base of the shuttle with both feet planted. Overhand serves are not allowed.

Can the shuttle land on the line?

Yes. A shuttle that lands on any boundary line is in. In singles, that means the inner sidelines and the back boundary line.

Final Thoughts

Singles badminton rewards players who understand the court and use it. Remember the long, narrow boundaries, serve from the side that matches your score, and treat every rally as a point. Add smart movement (shift your opponent, reset to center, work the full length) and the rules stop being something to memorize and start being an advantage. When you are ready to play your best, do it in kit that keeps up: explore Olaben’s best sellers.