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 |
| Page | Use it for |
|---|
| Team Registry | Canonical teams and owner history |
| Division Registry | Division names, codes, and eras |
| Registry Usage | How to apply registry records |
Last modified on May 15, 2026