xG — Expected Goals
Probability that a shot becomes a goal, based on historical chances of similar quality.
xA — Expected Assists
Probability that a pass becomes a shot that becomes a goal. Rewards creators independently of finisher quality.
PPDA — Passes per Defensive Action
Opponent passes allowed in the attacking 60% of the pitch per defensive action. Lower PPDA = higher press intensity.
PSxG — Post-Shot Expected Goals
xG re-computed after the shot is struck, factoring on-target trajectory. PSxG minus goals conceded quantifies goalkeeper performance.