Baseball Player Won-Loss Records
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The basic calculation of Player won-lost records is described here. I made fairly significant modifications to some aspects of Player won-lost records in January and July of 2019. These are discussed here. Player won-lost records are compared to WAR (as calculated by Baseball-Reference and Fangraphs) in an article here.

For a more in-depth description of Player won-lost records, how they are calculated, and who the best players of the past 80 years were in various aspects of Player won-lost records, I have published a book with McFarland, entitled Player Won-Lost Records in Baseball: Measuring Performance in Context. I self-published a second book at Amazon focusing on the 50 years from 1961 - 2010 entitled Baseball Player Won-Lost Records: 150 Players, 50 Years. These books can be purchased through Amazon here.

I gave a presentation to the Chicago chapter of SABR (Society for American Baseball Research) on November 18, 2017. I have posted video of the presentation and follow-up Q-and-A on YouTube. The video runs almost exactly one hour.

The bulk of this article is intended to help guide people through the various options available here at my website. The remainder of this article is organized to parallel the links on the front page of the website in order. Click the "+" next to the link of interest to read more about it.

+ Find Individual Player
+ Compare Two Players
+ Find Individual Team
+ Find Individual League
+ Find Individual Game
+ Historical Leaders and Trailers
+ Articles about Player Won-Lost Records
+ Today in Baseball History

Article last updated: January 3, 2020

All articles are written so that they pull data directly from the most recent version of the Player won-lost database. Hence, any numbers cited within these articles should automatically incorporate the most recent update to Player won-lost records. In some cases, however, the accompanying text may have been written based on previous versions of Player won-lost records. I apologize if this results in non-sensical text in any cases.

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