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Much of the play-by-play, game results, and transaction information both shown and used to create certain data sets was obtained free of charge from and is copyrighted by RetroSheet.
Win Expectancy, Run Expectancy, and Leverage Index calculations provided by Tom Tango of InsideTheBook.com, and co-author of The Book: Playing the Percentages in Baseball.
Total Zone Rating and initial framework for Wins above Replacement calculations provided by Sean Smith.
Full-year historical Major League statistics provided by Pete Palmer and Gary Gillette of Hidden Game Sports.
Some defensive statistics Copyright © Baseball Info Solutions, 2010-2018.
Some high school data is courtesy David McWater.
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