In previous articles, I’ve shown defensive ratings using basic play-by-play data from Retrosheet. All I really need to know to get good defensive ratings is what type of hit it was (ground ball, fly ball, line drive) what plays were made defensively and by whom, and who ended up fielding every hit. I’ve used this data to produce major league fielding ratings for seasons 2003 to 2008. (The method is a little different before that due to data availability.) There is no reason the same method cannot be applied to the minor leagues, except that I didn’t have a data source.
The Hardball Times
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