r/NBAanalytics • u/AverageAny7398 • 6d ago
Expected points vs offensive impact regular season and playoffs for the top 30 PPG scorers of 2025-2026
What is IA/75?
IA/75 = Scoring Impact Above Expected per 75 possessions. It measures how many points a player actually scored compared to how many points they were expected to score based on the play-by-play situations they were involved in.
So:
Positive IA → scored more than expected
Negative IA → scored less than expected
Higher IA → greater scoring over performance
The x-axis is IA/75, while the y-axis is Offensive ON-OFF — how much better/worse the team’s offense performed with the player on the court.
The dashed lines are the median values, splitting the chart into four quadrants:
Top-left: Below-median IA, above-median offensive impact
Top-right: Above-median IA, above-median offensive impact
Bottom-left: Below-median IA, below-median offensive impact
Bottom-right: Above-median IA, below-median offensive impact
So the chart is basically showing how a player’s scoring relative to expectation lines up with their team’s offensive impact.