What CAR measures. CAR quantifies how many wins a player contributes above a freely available replacement-level player at their position and league. It combines role-specific individual statistics — each adjusted for team context to reduce inflation from winning or losing environments — into a single number expressed in wins.

Replacement level. The baseline is the 25th percentile of qualifying players (minimum 10 GP) at each role within the dataset. A player at exactly replacement level scores 0. The replacement baseline is recalculated per dataset, so figures from different leagues and years reflect different competitive environments and should not be directly compared.

Limitations. The model cannot capture strategic coordination, draft execution, communication, or macro decision-making that doesn't manifest in individual statistics. Players in system-oriented roles (e.g. utility junglers, facilitating supports) may read lower than their actual contribution.