Method
How our numbers are made
The score, the win chance, the death review and the lane labels are ours, not Riot's. Each has a page that says how it is made, what it was measured against on our own games, and where it goes wrong. The figures are recomputed every night and published whether they flatter the method or not.
The Riftline score
A 0 to 10 for every player in every game, from seven role-relative measures.
Tonight: AUC 72% on 3.8k games.
The win chance
Each side’s chance to win, minute by minute, and the moments that moved it.
Tonight: 72.5% of winners called on games it had not seen.
The death review
Which deaths were traded, which takedowns converted, and what each cost.
Tonight: 74.8% of 162k deaths traded.
Lane labels
Won, even or lost at 14 minutes, placed against the same role.
Tonight: the closest 30% of lanes are even.
What all four have in common
Each is computed from the games Riftline stores, never from a black box, and each is withheld rather than guessed when the games behind it are too few: a score needs 200 games in a queue and role, a profile average needs 10 scored games, and the win-chance curve is shown only while it beats a plain guess by a stated margin.
None of them is a rating of a player. Riot's rank is the only ranking on this site, shown beside these numbers and never combined with them.