Running a tournament here
- Name it and list entrantsThe name shows above the bracket and on the printout. Enter entrants in seed order, or let the random draw place them.
- Pick the formatKnockout for speed, double elimination for fairness, Swiss when nobody should be eliminated, round robin when everyone should meet everyone.
- Tap results as they landWinners advance instantly and standings update. Copy the share link after each round so everyone sees the same state.
How the formats work
Knockout — single elimination
One loss and you're out. With seeded entry the strongest entrants are placed so they can only meet late — seeds 1 and 2 sit in opposite halves and can only collide in the final. Fields that aren't a power of two get byes for the top seeds in round one only; after that, every spot is played. A field of n decides a champion in n−1 games.
Knockout — double elimination
Everyone gets a second life. Your first loss drops you into the losers bracket, where you can still fight back to the grand final; a second loss ends the run. The undefeated winners-bracket champion meets the losers-bracket survivor last — and if the survivor takes that game, one deciding rematch settles it. Expect 2n−2 games, one more if the final resets.
Swiss system
Nobody is eliminated. Each round pairs entrants on the same score — winners meet winners, strugglers meet strugglers — and the same two never play twice while any fresh pairing exists. Great for club nights and game days where everyone should keep playing; about log₂(n) rounds is enough to sort a clean winner.
Round robin
Everyone plays everyone once and the best record takes it — the fairest format when you have the time. A field of n needs n−1 rounds (n if odd, with a rotating bye). Standings update as you tap results.
Worked examples
Six teams, seeded knockout. The bracket rounds up to eight slots; seeds 1 and 2 take the round-one byes. Five games decide it: two first-round games, two semifinals, one final. Tap winners as results come in and the champion banner appears after the last pick.
Nine players, Swiss night. Four rounds, no eliminations. Each round pairs equal scores, the odd player out gets a bye once, and after round four the standings crown a clean winner — everyone played all four rounds.
FAQ
Which tournament format should I pick?
Short on time: single-elimination knockout, done in n−1 games. Want fairness for strong entrants: double elimination, where one bad game isn't the end. Everyone should keep playing all day: Swiss, which pairs equal scores each round with no eliminations. Have time for the full slate: round robin, where everyone plays everyone and the best record wins.
How does seeded knockout placement work?
Seeds are placed so the best can only meet late: 1 and 2 in opposite halves, the top four in different quarters. Byes exist only in round one and go to the top seeds when the field isn't a power of two — from round two onward every match is played.
How does the Swiss system decide pairings?
Each round sorts everyone by score and pairs equals — winners against winners, and never the same opponent twice while a fresh pairing exists. With an odd field the lowest-standing entrant without a bye sits out and scores the round as a win. About log₂(n) rounds separates a clear first place.
What is the grand-final reset in double elimination?
The winners-bracket champion arrives undefeated; the losers-bracket champion arrives with one loss. If the losers-bracket champion wins the grand final, both stand at one loss — so a single deciding rematch settles the title. It appears automatically only when that happens.
Can I name the tournament, edit entrants, or share mid-event?
All three. The tournament name sits above the bracket and on the printout. Renaming an entrant updates every match instantly. The share link carries the name, format, seeding, and every result so far — send it after each round and everyone sees the same state.
Where is my tournament stored?
In the link and nowhere else. Everything runs in your browser and is encoded into the URL as you go — bookmark it or copy the share link to keep it. No account, no upload, and we never see your entrants.