Source coverage is part of every basketball result. This reference names the systems and tables used by public products, along with the fields they cannot establish.
Team evidence
Game results and schedules
nba_api.ScheduleLeagueV2 and nba_api.LeagueGameLog
Coverage
NBA schedule and completed game-result records available to the ingestion run.
Cadence
Ingested as the schedule and results change; downstream ratings are recomputed from the selected season.
Used for
Team strength, standings context, game logs, and season state.
Limits
Source availability and upstream corrections can change freshness.
A team result is not a player attribution.
Player evidence
Player and team season statistics
nba_player_season_stats and nba_team_season_stats
Coverage
Season-level box-score and team-stat records used by the current public NBA metrics.
Cadence
Refreshed with the NBA data pipeline and selected by season at read time.
Used for
UB Impact, Offensive Impact, Defensive Impact, DAWG, Value Added, and the UB Value ranking inputs.
Limits
Box scores do not capture every defensive action, spacing effect, or lineup interaction.
Tracking-derived features are not silently inferred when unavailable.
Contract evidence
Contracts and salary-cap references
Basketball-Reference contract adapter; nba_player_salary_history, nba_team_salary_cap_players and nba_salary_cap_reference
Coverage
Publicly documented salary and cap-reference rows available to the contract ingestion path.
Cadence
Updated when source records change, with source URLs and checksums retained by the ingestion process.
Used for
Cap share, contract context, and the Contract Surplus model.
Limits
Options, guarantees, supermax rules, trades, and apron restrictions are not inferred when absent.
The adapter follows source terms and crawl-delay requirements.
Missing rows are reported as unavailable.
Draft evidence
Future draft capital ledger
Source-backed first-round ledger maintained in the repository
Coverage
Future first-round obligations and rights where the underlying source record is documented.
Cadence
Reviewed when transaction or source records change.
Used for
Draft Capital and front-office context.
Limits
Pick value, protections, and conveyance details remain unavailable when not documented by the source record.
This is not a projection of draft-player quality.
Unavailable boundary
Tracking and play-by-play features
Not currently a published source for the player-quality products
Coverage
No published coverage claim is made.
Cadence
No public cadence is promised.
Used for
Withheld from metrics that require defensible event or tracking coverage.
Limits
The product does not manufacture tracking observations or present them as observed data.
Private archive locations, credentials, API keys, and infrastructure endpoints are intentionally not part of this public reference.
