ISO
Isolated power — extra bases per at-bat. SLG minus AVG.
What ISO means
Strips singles out of slugging so you're left with just extra-base hits. A pure power gauge — Aaron Judge sits around .280, slap hitters under .120.
How ISO is calculated
ISO = SLG − AVG
What counts as a good ISO
Higher is better — roughly .120 is poor, .160 average, .200 good, and .250 or better elite.
Also written
iso_power