Plus-minus in basketball: useful, noisy and easy to misread
A bench player finishes +14 and a starter finishes -9. Plus-minus is one of the simplest numbers in a box score and one of the easiest to over-interpret.
Illustration: Maxivaleur design team.
Plus-minus records the score difference while a player is on the floor. If a team outscores its opponent 30–22 during a player's minutes, that player is +8 for the game, whatever they personally did.
Why it is useful
It captures things a box score misses: spacing, screens, defensive rotations, the shot that was never taken because a defender was in the right place. Over a long season, consistently strong plus-minus usually points to something real.
Why it is noisy
In a single game it mostly reflects who a player shared the floor with and who was on the other side. A reserve who plays twelve minutes against the opponent's reserves can post a big number; a starter who spends every minute against the best lineup can look poor.
How to read it well
- Compare players who played similar minutes.
- Look at several games, not one.
- Read it next to the quarter scores in the match centre to see when the runs happened.
Maxivaleur's basketball match centre currently shows team totals — field goal and three-point percentages, rebounds, assists, turnovers and fast-break points. Individual plus-minus will appear once player-level data is part of the licensed feed.
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