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What Average Leverage Index Revealed About the 2021 Diamondbacks

Leverage index is often used to describe the potential impact of a specific at-bat, and whether a specific player had better results in high impact situations. When the leverage index is high, an at-bat can change the team’s win probability by a huge amount. When it is very low, the outcome of the game leaves almost no room for doubt.

Instead of leverage index, this article focuses on average leverage index for each complete game. My view is that in general, when leverage was low, the game was decided in the early innings; when leverage was high the game was decided in the late innings.