Leverage Index
How consequential this at-bat is. 1.0 = average, 2.0+ = "every pitch matters".
What Leverage Index means
Multiplier on swing-in-win-probability per outcome. Late, close games with runners on push leverage above 2; mop-up time sits below 0.5.
What counts as a good Leverage Index
Higher is better — roughly .500 is poor, 1 average, 1.5 good, and 2 or better elite.
Also written
leverage · li