Football Stat Definitions

Glossary of all football statistics used across the site

All stat categories, model concepts, and definitions used across Football pages.

Panna Model

The Panna rating system is a predictive player value model for association football, analogous to TORP for AFL.

Term	Description
Panna	Overall player rating: Offense − Defense. Higher = more valuable.
Offense	Expected goals (xG) created per 90 minutes, adjusted for teammate and opponent quality.
Defense	Expected goals prevented per 90 minutes. Negative values are better (more xG prevented).
SPM	Statistical Performance Metric — box-score regularized plus-minus, complementary to xG-based ratings.
Percentile	Player’s rank as a percentile among all rated players (100 = top).

Future Metrics (Coming Soon)

These metrics will be available once the Panna data pipeline generates per-match value breakdowns:

Term	Description
EPV	Expected Possession Value — the expected goal value of a possession given the current game state.
EPR	Expected Points Rating — predictive rating derived from historical EPV contributions.
SPV	Statistical Performance Value — per-match box-score value contribution.
SPR	Statistical Performance Rating — predictive career rating from SPV history.
Equity	Play-by-play credit assigned to each action based on EPV change. Positive = value added, negative = value lost.

Box-Score Stats

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