The dashboard below has five pages, each of which can be filtered for any player(s) or season(s) in NBA history. The pages and links explaining there contents are listed below:
Offensive Z-Scores: Standardized scores expressing a player’s offensive production relative to his context, but standardized to allow comparison of players in different context. Offensive z-scores are explained here.
Offensive Differentials: Simple difference of a player’s per-minute production with average per-minute production in his context, aggregated across each season. Offensive differentials are explained here.
Defensive Opponent Impact Z-Scores: Standardized values that reflect the impact a player had as a defender on the players he guarded. Defensive z-scores examine a player’s effect on the players he covered, then standardize the result to allow comparison across eras. I explain Defensive Opponent Impact Z-Scores here.
Direct Defensive Impact Z-Scores: Direct defensive impact refers to the plays we know a specific defender (like steals, blocks, or fouls), which are recorded i the box score. These values are standardized to allow for easy and direct comparison of players who played in very different circumstances . Direct Defensive Impact Z-Scores are described here.
Defensive Differentials: These values express a player’s defensive impact relative to his opponent’s normal performance level, or relative to league average (in the case of “box score” defensive stats). I explain how to calculate defensive differentials here.
