Rules · Season shape · Must-follow · the model’s own rule

Every game has one round

internal:round.ASSIGN-01Catalogue name: Every match has one round

What it means

Every game is placed in exactly one round.

Why it exists

A sanity check that the round stageOne of five steps that build the fixture: opponents, rounds, dates, home ground and venue, TV slot.Read more in the glossary finished its job without leaving a game out or placing it twice.

For example

There are 207 games and each appears in exactly one of the 24 rounds.

How strictly it applies

Must-follow The fixture must obey this rule. A separate checker tests the finished fixture afterwards.

Must-follow. A model-integrity check, not an AFLAustralian Football League.Read more in the glossary rule.

Where to see it

How the fixture is made shows how this plays out across the season.

How it played out across versions

One cell per release, oldest first. Each shows the verdict that release recorded for this rule; a release with no row for the rule says so.

13 Sep13 Sep 2026Preview 13 September2027 · Generated
Off, switched off by these settings
no checker yet
13 Sep13 Sep 2026Preview 14 September (seed 42)2027 · Generated
Met, met
14 Sep14 Sep 2026Repeat-qualified (seed 42)2027 · Generated
Met, met
14 Sep14 Sep 2026Corrected (seed 43)2027 · Generated
Met, met
14 Sep14 Sep 2026Rules release (seed 43)2027 · Generated
Met, met
15 Sep15 Sep 2026B009 nominal (seed 43)2027 · Generated
Met, met
18 Sep18 Sep 2026B010 nominal (weight 0.10)2027 · Generated
Met, met
19 Sep19 Sep 2026B011 nominal2027 · Generated
Met, met
30 Sep30 Sep 2026B012 Wednesday opening2027 · Generated
Met, met
20252025 season as played2025 · As played
Off, switched off by these settings
rule source not recorded

First checked independently in Audited re-run, 13 Sep 2026.

For analysts: catalogue text and codes

Rule id: internal:round.ASSIGN-01
Catalogue text: Every match is placed in exactly one round.
Catalogue type: modelled rule (not a catalogue row)
Catalogue family: internal
Class: hard · The fixture must never break it.
Step: S2 · Step 2: rounds
Recorded status: met · source row evaluated
Catalogue reason: A model-integrity check: the round assignment is complete and unambiguous.