Presented here is a virtual baseball card series that aims to serve as an introduction to sabermetrics: Why is on base percentage better than batting average? What’s a good OPS? What does wRC+ mean?

Our goal is to provide a basic understanding of the concepts behind the crazy acronyms as they become increasingly common in baseball coverage. Most entries consist of a brief description; a “range table” that breaks down what’s good, average, and bad; and top-five MLB leaderboards for the past two seasons. New sets will added in the coming weeks.

9/5/17: “Pack 1” consists of an intro (1), OBP (2), SLG (3), OPS (4), and OPS+ (5). It can be downloaded as a ZIP file (3.5 MB).

10/13/17: Three cards for “Pack 2” added – BABIP/Run Expectancy (6), wOBA (7), and wRC+ (8). ZIP file (1.8 MB)

Click on the side arrows to advance back and forth. Mobile users can pinch-and-zoom to enlarge.

 

Pack #1

 

Pack #2

 

 
 

By Darius Austin, Ken Maeda, and Rob Mains.
Thanks to Brandon Lee, Khurram Kalim, and Eric Roseberry.

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