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 Wins above Replacement calculations provided by Sean Smith of BaseballProjection.com.

Full-year historical Major League statistics provided by Pete Palmer and Gary Gillette of 24-7 Baseball.

Some defensive statistics Copyright BIS, 2010-2016 .

Some high school data is courtesy David McWater.

Many historical player head shots courtesy of David Davis. Many thanks to him. All images are property the copyright holder and are displayed here for informational purposes only.

Play Index Loading Photos from the George Grantham Bain Collection at the Library of Congress.