Team efficiency

On/off

On/off compares how a team played per 100 possessions with a player on the floor against how it played with him on the bench.

It is the most direct public view of how a team changes when one player checks in.
Splitting it into offense, defense, four factors and shot profile shows where the change comes from.

Swing is on net minus off net. A +6 swing means the team was 6 points per 100 possessions better with him playing.
Read the 95% range before the swing. A +4 swing with a range of −4 to +12 is consistent with no effect at all.
Check who he played with and against. Strong teammates lift the on number; facing starters pulls it down.
A great backup makes a starter's off number look good, which shrinks his swing without saying anything bad about him.

Every possession of every regular-season and playoff game from 2022-23 on is tagged with the ten players on the floor, using the same lineup reconstruction as DRBL.
Filtered drops garbage time and possessions that start with 2 seconds or less in a period. Garbage time is the closing run of a fourth quarter with two or fewer starters on the floor and a lead of at least 25 with more than 9 minutes left, 20 with 6 to 9 minutes left, or 10 inside 6 minutes.
Clutch uses the NBA definition: last five minutes of the fourth quarter or overtime, score within five.
Luck-adjusted sets opponents' 3-point and free-throw percentages to league average.
With/without splits a pair of teammates into both on, each alone, and both off.
Who takes his minutes lists teammates whose share of the floor rises when he sits. Their play is most of his off number.
The season line shows his swing from opening night through each game, starting once he has 250 possessions on and off.
Playoff splits get no league percentile, since playoff teams play anywhere from 4 to 28 games.