Badminton
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1. Join and find players

Sign up free and fill in your profile. Join your club with the invite link it shares, or create a club. Find people to play on the players page.

Players a club adds by name can claim their profile later with the invite link and keep all their results.

2. Send a challenge

Open a player's page and tap Challenge, or send a challenge for singles, doubles or mixed doubles. Choose one game or best of three, to 21, 15 or 11 points, the date and the courts. Leave the opponent empty to post an open challenge anyone can accept.

3. Club ties

A club can challenge another club to a tie: three or five matches of singles and doubles. Each club's organisers pick their players for every match on the tie page. The club that wins more matches wins the tie.

4. Send the umpire link

On the match page, copy the umpire scoring link and send it to whoever keeps score at the court. Anyone with the link can score that one match, without an account. Make a new link any time to switch it off.

5. Score it live

Pick who serves first (and in doubles, who serves and who receives), then tap Point on the side that won each rally. The screen shows who serves next and from which court, calls game point and match point, and tells you when to change ends. Made a mistake? Tap Undo last.

After a point you can also tag how it was won (smash, drop, net shot and more, or an error), who hit it and where the shuttle landed. That builds every player's shot map. Tagging is optional.

6. After the match

Add up to 5 photos, prizes and who gave them. Ratings, rankings, player stats and tournament tables update straight away.

Ratings

Every player starts at 1000, with separate singles and doubles ratings. After each finished match, the winners take points from the losers. Beating a much stronger opponent earns more, and a bigger winning margin counts a little more. In doubles both partners move by the same amount. Walkovers count in the record but don't change ratings. Clubs get their own rating from club ties.

Scoring rules

Rally scoring: every rally wins a point. A game is won by the first side to the target (21, 15 or 11) with a two-point lead, or to the cap (30, 21 or 15). The side that wins a rally serves the next one. A server's even score means serving from the right court, odd from the left. The winner of a game serves first in the next game.