> ## Documentation Index
> Fetch the complete documentation index at: https://docs.rffl.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Owner History

> How to use the team registry for RFFL owner and co-owner history.

Owner history comes from the canonical team registry. The registry covers team-season records from 2002 through 2025.

## What The Registry Can Answer

| Question                         | Answer path                                         |
| -------------------------------- | --------------------------------------------------- |
| Who owned a team in a season?    | look up the team-season record                      |
| Which teams existed in a season? | filter the registry by season year                  |
| Was a team co-owned?             | use the co-owner fields in the registry             |
| Did a team code change?          | resolve through the alias registry before answering |

## Source Boundary

Do not infer personal identity, ownership continuity, or franchise lineage from team names alone. Use canonical owner codes and season-specific records.

## Source Paths

| Source                             | Purpose                               |
| ---------------------------------- | ------------------------------------- |
| `registries/RFFL_REG_TEAMS_001.py` | canonical registry implementation     |
| `registries/canonical_teams.csv`   | CSV reference for team-season records |

## Related

| Page                                       | Use it for                        |
| ------------------------------------------ | --------------------------------- |
| [Team Registry](/registries/teams)         | Canonical teams and owner history |
| [Division Registry](/registries/divisions) | Division names, codes, and eras   |
| [Registry Usage](/registries/usage)        | How to apply registry records     |