Open Data & Methodology

The datasets nobody else publishes for college softball, free to download and cite.

The numbers behind Pennant Charts, published as open data. Each page explains the method in plain language, shows the headline table, and offers the full dataset as a CSV download. Everything here is a Pennant-derived metric built from public play-by-play; the official NCAA record remains the source of truth for raw season totals.

All datasets are free to use under CC BY 4.0 with attribution to Pioneer Pennant. If you cite these numbers in a story, a broadcast, or a model, link back to this page so your readers can check the method.

The datasets

Composite Team Rankings

All 349 teams on a Division I schedule rated by SRS, Bradley-Terry, and Elo, with title odds from a 50,000-run bracket simulation.

WAR for College Softball

Wins above replacement for every team, from a softball-native FIP and run values fit on this season's play-by-play.

Linear Weights & Run Expectancy

The run value of every event and the full 24-state run expectancy matrix, fit on 406,949 reconstructed plate appearances.

Park Factors

A schedule-controlled park factor for every Division I home field.

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