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To make a graph of the Win Expectancy of a baseball game, use the graph a game tool.

This data is from MLB games from 1957-2018, including postseason games. All data is available at Retrosheet.

Linked from: FiveThirtyEight (search for "eighth inning"), The Washington Post, CBS Sports, CBS Sports again, Royals Review, Beyond the Box Score, and more!

Idea taken from's Win Expectancy Finder (now defunct). Here's a good article about Win Expectancy. Leverage Index calculations based on this article.

Source files available on GitHub.

Articles written with this data:

The information used here was obtained free of charge from and is copyrighted by Retrosheet. Interested parties may contact Retrosheet at 20 Sunset Rd., Newark, DE 19711.

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