Double-elimination knockouts explained

How double-elimination pool knockouts work, why players prefer them, how byes are handled, and how to run one with walk-in entrants on the night.

Updated

The short answer: In a double-elimination knockout, a player is only out after losing twice. Everyone starts in the winners' bracket; a first loss drops you into the losers' bracket, and a second loss knocks you out. The winners' bracket champion meets the losers' bracket champion in the final, so every entrant is guaranteed at least two matches.

Single-elimination knockouts are quick, but half the field goes home after one match. Double elimination fixes that: you need to lose twice to be knocked out.

How it works

  • Winners’ bracket. Everyone starts here. Win and you stay.
  • Losers’ bracket. Lose once and you drop here. Lose again and you’re out.
  • The final. The winners’ bracket champion plays the losers’ bracket champion. Some events give the unbeaten player an advantage, or require the losers’ bracket player to win twice.

Byes

If the number of entrants isn’t a power of two (8, 16, 32…), some players get a bye in round one. Two things matter to players: no one should get more than one bye, and byes shouldn’t decide who meets whom later.

Rematches

Because players drop from one bracket into the other, they can meet the same opponent twice. A well-drawn bracket places dropping players to avoid early rematches where possible.

Walk-ins on the night

Pub knockouts often have players turning up late. League Manager can reserve open slots in round one for walk-ins, and add late entrants by reclaiming a bye or a reserved slot rather than redrawing the whole bracket.

Ally Knockout

League Manager also includes Ally Knockout, a double-elimination variant designed to keep byes to a minimum and avoid rematches before the final wherever the draw allows.

Run one

See the formats in League Manager, or get in touch to set up your next knockout.

Common questions

How many matches does a double-elimination knockout need?

Roughly twice the number of players, minus one or two. A 16-player event needs about 30 matches, compared with 15 in a single-elimination knockout.

What happens with an odd number of players?

Some players receive byes in the first round. Good software spreads byes fairly and avoids giving the same player two byes.

Next step

Put it into practice

Learn with the Pool Academy, or run your league on League Manager.