Research & methods

The evidence behind the profiles. Explore the methods, data and measured limits.

Player similarity

Observed profiles show measurable within-season consistency. This is not independent validation of scouting or transfers.

Full evaluation →

Historical translation

Available evidence does not support broad cross-league translation. Historical WSL intervals underestimate uncertainty for some features.

Full evaluation →

Recruitment fit

Rankings show signal above chance but do not consistently outperform Player DNA. Profile fit does not predict transfer success.

Full evaluation →

Player image credits

Player photos are separate presentation metadata from Wikidata and Wikimedia Commons, not football-provider imagery. Copyright reuse is checked; this is not a universal assessment of personality rights. Photos do not enter any model or ranking.

Images are proportionally resized, padded and converted to WebP without cropping. Derived images retain their source licence, including share-alike terms where applicable.

Photo dates and kits may differ from the selected data season. An available photo does not imply better data coverage or a stronger player.

All photo sources and licences (482)

Source register & ingestion pipeline

SOURCE REGISTER

The working sample

Two providers. Different matches, formats and assumptions. Every number below comes from the ingestion pipeline.

The working sample
SourceMatchCompetition / seasonIngested recordsExplore the player database
StatsBomb Open DataJSON / EventsArgentina
France
FIFA World Cup20224,407event records↗
SkillCorner Open DataJSONL / TrackingWestern United
Sydney Football Club
A-League2024/202560tracking frames↗

From source file to inspectable evidence

  1. 01Pinned sources
  2. 02Typed contracts
  3. 03Parquet + DuckDB
  4. 04Research explorer