Stats explained · PIE
Player Impact Estimate (PIE)
PIE adds up a player's box score, the good and the bad, and divides it by the same sum for everyone in the game. The result is his share of what happened.
The formula
NBA.com's formula. The game sum covers both teams, so PIE is a player's share of everything the box score recorded in that game.
Worked example
#1 Guard, practice box score
28 PTS, 9 FGM, 6 FTM, 19 FGA, 7 FTA, 4 DREB, 0 OREB, 8 AST, 2 STL, 0 BLK, 2 PF, 3 TO.
28 + 9 + 6 − 19 − 7 + 4 + 0 + 8 + 2 + 0 − 2 − 3 = 26
Example (made-up game sum)
The same sum for both teams together: 200.
26 ÷ 200 = 13.0%
Our practice box score shows only one team, so the game sum is made up.
What it tells you
A quick summary of how much of a game's box score belongs to one player.
What it does not
Anything the box score does not count, such as defence without steals and blocks. It is not per minute, so players with more minutes tend to score higher.
Sources
Checked on 20 October 2026, unless a source has its own date. Spotted a mistake or a record that fell? Write to hello@boxscorestories.com.
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