It may be the fairest tournament system there is: everyone plays everyone exactly once. No lucky draws, no early exits, no arguments about who had the easier path. But the round robin comes at a price: the number of matches grows fast. Here's when the system pays off – and how to keep it under control.
How a Round Robin Works
At the start, a fixed schedule is created once and applies to the whole tournament. Each round, everyone meets a new opponent until all have played each other once. Unlike the Swiss system, the draw doesn't depend on previous results – who plays whom and when is clear from the start. That makes the system particularly transparent: everyone can check at any time who's up next.
You can play singles or with fixed doubles or mixed teams. Women and men play either together in one common ranking or separately, with their own schedule and separate standings.
How Many Rounds Does It Take?
The maths is simple: with an even number of participants, you need one round fewer than there are participants. With an odd number, you need as many rounds as participants – and in each round one person has a bye, exactly once per person over the whole tournament.
| Participants | Rounds | Total matches | Matches per round |
|---|---|---|---|
| 4 | 3 | 6 | 2 |
| 5 | 5 | 10 | 2 (1 bye) |
| 6 | 5 | 15 | 3 |
| 8 | 7 | 28 | 4 |
| 10 | 9 | 45 | 5 |
| 12 | 11 | 66 | 6 |
The number of rounds determines how long it takes. With 12 participants, that's 11 rounds – at 15 minutes per round including changeover, almost three hours, and only if six tables or courts are free at the same time. Whether a bye counts as a win (bye points) or gives no points is up to you in the settings. Our tournament schedule calculator shows how to plan the time for your evening realistically.
Groups: The Answer for Larger Fields
With many participants, you can split the field into several groups; matches are then only played within each group. Twelve participants become two groups of six, for example: just 5 instead of 11 rounds and 30 instead of 66 matches. In the Club Turnier Manager you set the number of groups yourself and can move participants to another group with a click – for instance, to spread strong players evenly.
If you still want a single tournament winner at the end, combine groups with a final round. That's exactly the knockout system with a group stage, which we describe in Knockout With or Without a Group Stage.
What Happens When Someone Withdraws?
Because the schedule is fixed, nobody can be added during the tournament. If someone drops out, you have two options: replace the person – the substitute takes over their place, schedule and statistics so far. Or remove them from the tournament. Then comes the tricky question of what happens to matches already played against them.
The Club Turnier Manager asks you in this case: with "Void", all matches against the withdrawn player no longer count, retroactively too – so everyone is treated equally. With "Keep results", the matches already played stay in the standings. You'll find more on these details in Tournament Rules Nobody Questions.
When a Round Robin Pays Off – and When It Doesn't
The system shows its strengths when the group is manageable and everyone should get the same number of matches:
- Small to medium groups of around 4 to 8 participants per group
- Club championships in small sections, where the standings should be as meaningful as possible
- Planned events where the list of participants is fixed in advance
It's less suitable for very large fields without groups and for evenings where it isn't clear who'll turn up when. There, the round-based format or Americano is more flexible – more on that in Which Tournament Format Suits Your Event?
Your Schedule in Seconds
The Club Turnier Manager creates the complete round robin schedule automatically – in groups if you like, with up-to-date standings after every round. Offline in the browser, no installation.
Try It NowConclusion
The round robin is the most transparent and fairest tournament system: everyone meets everyone, luck of the draw plays no part, and the schedule is fixed from the start. The catch is the number of matches, which rises sharply with every extra person. If you keep that in check with groups and agree beforehand how to handle withdrawals, you end up with standings nobody argues about.