Group stage or Swiss?

The case for groups

You can publish the whole schedule in advance. Every team knows when they play and against whom before they arrive, which matters when people are travelling or when courts are booked by the hour.

It produces a clean bracket. Two from each of four groups is eight teams, which is a quarter-final, which is a tidy afternoon.

And it is what everybody already understands. Nobody needs the format explained.

The case for Swiss

It scales. Thirty-two teams in groups of four is eight groups and 48 group matches; thirty-two teams in a Swiss is five rounds of sixteen, which is 80 matches — but each team plays five rather than three, and you do not need eight groups' worth of separate tables.

More importantly, it produces a meaningful ranking of the whole field rather than eight separate small ones. If you need to know who finished 12th, groups cannot tell you and Swiss can.

And it self-balances: a team that wins early meets harder opponents, so the record at the end means something in a way a group record does not when one group was much stronger than another.

The group-of-death problem

The main weakness of groups is that the draw decides a lot. Four strong teams in one group means two of them go home while a weaker team advances from elsewhere. Everybody accepts this in football and it is still unfair.

Swiss does not have this problem by construction, because there is no draw to be unlucky in — you are paired against whoever is on your record.

The Swiss weaknesses

You cannot publish the schedule. Only round one and the round count, which is a real problem for a tournament where people want to know when they are playing.

It needs a round to finish before the next can be paired, so a slow court holds up the whole field. Groups do not care — every match in a group can be played whenever a court is free.

And it is less familiar. You will explain it.

The short answer

Under about sixteen teams, use groups. Over about thirty-two, use Swiss. In between, use groups if the schedule needs publishing and Swiss if the ranking needs to be meaningful.

And in both cases, finish with a small playoff. A Swiss table can leave two teams level on everything, and a group stage that ends without a final feels like it stopped rather than finished.

Common questions