Badminton Odd Even Rule — Which Side Do You Serve From?
The odd/even rule determines which service court you serve from in badminton. It applies to every serve in every game, whether singles or doubles. Once you understand it, you will never have to guess which side to stand on again.
The Rule in One Sentence
"Right" and "left" are from the server's perspective when facing the net. The right court is the service court on the server's right-hand side, and the left court is on their left-hand side.
Why Right Court for Even Scores?
Every game starts at 0-0. Zero is an even number, so the first serve of every game always comes from the right court. This is the anchor point -- everything else follows logically from there.
When a point is scored, the server's score changes parity. If you were at 0 (even, right court) and score a point, you move to 1 (odd, left court). Score again and you are at 2 (even, right court). The court alternates with every point the server wins.
Quick Reference Table
| Server's Score | Even / Odd | Service Court |
|---|---|---|
| 0 | Even | Right |
| 1 | Odd | Left |
| 2 | Even | Right |
| 3 | Odd | Left |
| 4 | Even | Right |
| 5 | Odd | Left |
| 20 | Even | Right |
| 21 | Odd | Left |
How It Works in Singles
In singles, the odd/even rule is straightforward because there is only one player per side:
- •Look at your own score (the server's score, not the opponent's).
- •If even, stand on the right service court and serve diagonally to the opponent's right court.
- •If odd, stand on the left service court and serve diagonally to the opponent's left court.
- •When the serve changes hands, the new server uses their own score to determine the court.
How It Works in Doubles
In doubles, the same even/odd rule applies to the server, but there is an additional layer -- the serving team swaps sides when they score:
- •The server's score determines the court: even = right, odd = left.
- •When the serving team scores, both partners swap courts. The same player continues serving from the other side.
- •When the serve changes to the other team, nobody swaps. The player on the correct court (matching their team's score parity) becomes the new server.
This is why the server always ends up on the correct court automatically -- the swap ensures the server's position matches the score parity. Try the doubles rotation simulator to see this in action.
What Happens at the Start of a Game (0-0)?
At 0-0, both scores are even. The server stands in the right service court and serves diagonally to the receiver in the opposite right court. In doubles, the server's partner stands in the left court, and the receiver's partner stands in the left court on their side.
The toss at the start of the match determines who serves first. The winner of the toss can choose to serve, to receive, or to pick a side of the court. The loser gets whichever choice remains.
Common Mistakes
Related Guides
Frequently Asked Questions
What court do you serve from at 0-0?
The right service court. Zero is an even number, so the rule 'even = right' applies. This is true for every game in the match -- the first serve is always from the right.
Does the receiver also follow the odd/even rule?
The receiver stands in the diagonally opposite court from the server. Since the server's position is determined by the odd/even rule, the receiver's position follows automatically. You do not need to separately calculate the receiver's court.
What happens at deuce (20-20)?
The rule continues exactly the same. At 20-20, 20 is even so the server serves from the right. At 21-20, the server (at 21, odd) serves from the left. The rule works all the way up to the 30-point cap.
Does the odd/even rule use the server's score or the team's score?
The server's team score. In doubles, both partners share the same score. So if your team is at 8, that is even, and the server stands on the right regardless of which partner is serving.
Why do doubles partners swap sides when they score?
The swap keeps the server on the correct court. When the score changes from even to odd (or vice versa), the server needs to be on the other side. Swapping both partners achieves this while keeping the same player as the server.