PIE is the NBA's official all-in-one player impact metric published on NBA.com. It measures a player's share of all positive statistical events — points, rebounds, assists, steals, blocks — relative to the total statistical events in all games in which they participated.
Official metric with full historical data on NBA.com. Intuitive interpretation — what percentage of value did this player provide in their games?
Box score only. Shares PER's limitations regarding arbitrary weighting and minimal defensive component. Rath (2025) tested PIE against VORP as predictors of NBA salary across player archetypes and found VORP substantially outperformed PIE (total MSE: VORP 11.99 vs. PIE 35.84), suggesting VORP is a more reliable summary metric. No peer-reviewed validation as a predictor of winning or player impact.
Not used in APEX. PIE is an official metric, but official status does not equal analytical superiority. Both the academic literature (Jewell et al.) and community benchmarks identify BPM and RAPM-family estimators as more informative. Rath's independent testing further confirms PIE underperforms VORP. APEX uses neither PIE nor VORP as scored components, but if a display-only summary statistic is needed, VORP is the more reliable option.