Irvin Michael Stein
Irv Stein pitched batting practice for the Philadelphia Athletics in 1931, according to the March 6, 1932 Philadelphia Inquirer.
All logos are the trademark & property of their owners and not Sports Reference LLC. We present them here for purely educational purposes. Our reasoning for presenting offensive logos.
Logos were compiled by the amazing SportsLogos.net.
Copyright © 2000-2020 Sports Reference LLC. All rights reserved.
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, 2010-2020.
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.
We're Social...for Statheads
Every Sports Reference Social Media Account
Site Last Updated:
Question, Comment, Feedback, or Correction?
Are you a Stathead, too? Subscribe to our Free Newsletter
This Week in Sports Reference
Find out when we add a feature or make a change
Do you have a sports website? Or write about sports? We have tools and resources that can help you use sports data. Find out more.