For the complete documentation index, see llms.txt. Markdown variants of the ranked boards (dynasty and fantasy rankings for NFL, NBA, MLB and CFB) and dated snapshots of the NBA, NFL, MLB and college player-prop boards are available by appending.mdto those URLs or by sendingAccept: text/markdown; other pages answer 404.
Each cell is what the defence allowed in points per game against Division I teams, graded from the fewest allowed in the country; games are ordered by their softest matchup. A defence without enough games this season is read off last season, and says so.