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Ad Hoc (Flex Rounds)

Overview​

An Ad Hoc draw (also known as Flex Rounds) allows an arbitrary number of matchUps to be added to an arbitrary number of rounds. Unlike elimination or round robin draws, there is no predetermined bracket structure -- matchUps are created as needed.

In the factory, this draw type is represented by the constant AD_HOC. The alias FLEX_ROUNDS resolves to the same value.

Structure​

  • No fixed draw size or bracket shape.
  • Rounds can contain any number of matchUps.
  • Participants can appear in multiple rounds without being eliminated.
  • There are no links between rounds -- each round is independent.
  • No automatic advancement between rounds.
Round 1: P1 vs P2, P3 vs P4, P5 vs P6
Round 2: P1 vs P3, P2 vs P5
Round 3: P3 vs P5, P1 vs P6, P2 vs P4

Use Cases​

  • Informal or social tournaments without a fixed bracket.
  • Practice sessions or training events.
  • Formats where a tournament director manually assigns matchUps each round based on availability or other criteria.
  • Events where the number of rounds and matchUps per round are not known in advance.

Generation​

const { drawDefinition } = engine.generateDrawDefinition({
  drawSize: 12,
  drawType: 'AD_HOC',
});

MatchUps can be added to the draw after generation using the appropriate engine methods.