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Choosing a format is really choosing how many games each team gets, how long the day runs, and how fair the result is. Get it wrong and you either finish four hours late or send a team home after twenty minutes. Here is how the main formats actually behave.
Everyone plays everyone once. The fairest way to rank a group, because nobody benefits from an easy draw.
Games produced: with n teams it is n×(n−1)÷2. Six teams means 15 games across 5 rounds; eight teams means 28 games across 7 rounds. That second number surprises people.
Use it when you have 4–8 teams and a full day. Avoid it above about 10 teams unless you have several days, because the game count grows quadratically.
With an odd number of teams one sits out each round. That is unavoidable, but the bye should rotate so nobody is idle twice before everyone has been idle once. A properly generated schedule does this automatically; a hand-drawn one usually does not.
Split teams into pools, run a round robin inside each, then take the top finishers into a knockout. This is the workhorse format for a weekend event and the right answer most of the time.
Games produced: for 12 teams in three pools of four, each team plays 3 pool games, then 4 teams advance to a semi-final and final. Every team gets at least three games; the tournament finishes in a day.
Pool play solves the problem knockouts create: a team travels two hours, loses once, and goes home. Guaranteeing three games is the difference between an event people return to and one they do not.
Watch for: pools of unequal size make qualification unfair, because a team in a pool of three plays fewer games than one in a pool of five. If you cannot make pools even, decide in advance how you compare records across them.
Lose once and you are out. Fast, dramatic, and the format most likely to generate complaints.
Games produced: with n teams it is exactly n−1 games. Sixteen teams, 15 games, four rounds.
Use it for a final stage, a short evening event, or when time is genuinely tight. Avoid it as a whole-day format for teams who travelled, unless you also run a consolation bracket.
A bracket works cleanly at 4, 8, 16 or 32 teams. Anything else means byes in round one, and those byes should go to the top seeds — not because they need the advantage but because it is the only defensible way to allocate them.
You are out after two losses. Fairer than single elimination and considerably more complicated to run, because you need a losers’ bracket and the final may need to be played twice.
Games produced: roughly 2n−1. Use it when the result really matters and you have the time. Avoid it if the person running the desk has not done it before.
Not a tournament format so much as an ongoing one. Players or teams are ranked and results move them up and down. Excellent for clubs with irregular attendance, because a missed week breaks nothing. It needs results recorded consistently, which is where most ladders die.
| Situation | Format | Why |
|---|---|---|
| 4–8 teams, one day | Round robin | Fairest, and the game count fits |
| 9–24 teams, one or two days | Pools into bracket | Guarantees games, finishes on time |
| Teams travelled far | Pools into bracket | Nobody goes home after one loss |
| Short evening event | Single elimination | Fast and decisive |
| Result matters a lot | Double elimination | One bad game does not decide it |
| Ongoing club play | Ladder | Survives irregular attendance |
Count the games. Multiply by slot length plus changeover. Divide by the number of courts or pitches. If that number is larger than the hours you have, change the format now rather than at two o’clock on the day.
Our free schedule generator will build a round robin for any number of teams, single or home-and-away, with rotating byes and dates. For pools feeding a bracket that advances as results land, that is standings and brackets, and tournaments covers running the whole event.
With n teams it is n×(n−1)÷2. Six teams produce 15 games over 5 rounds; eight teams produce 28 games over 7. The count grows quadratically, which is why round robins stop being practical above about 10 teams in a day.
Pool play into a bracket, in most cases. It guarantees every team at least three games, so nobody travels a long way to lose once and go home, and it still finishes on schedule.
To the top seeds. A bracket runs cleanly at 4, 8, 16 or 32 teams; at any other number someone gets a bye in round one, and seeding is the only defensible basis for deciding who.
One team sits out each round. The bye should rotate so no team is idle twice before every team has been idle once — a generated schedule does this automatically.
Count total games, multiply by slot length plus changeover, divide by the number of courts or pitches available. If that exceeds the hours you have, change the format before you publish the draw.
Working out a number you can defend, and funding hardship properly.
Classification over age groups, access needs, and funder-ready data.
Boxes, ladders and flights — and fixing matches that never happen.
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