
Effectively Wild Episode 1781: Hidden Balls Trick
Effectively Wild: A FanGraphs Baseball Podcast
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Ball Manufacturing
We would expect there to be some variation within a lot, just because of vagaries in the manufacturing process. So how were you able to determine that these effects were not and differences in weight were not just random variants? Well, one of the things to take into account is that a lot of that variation isn't the whole ball, it's the covers. You know, seam heights are very hard to find consistently, unless they're very, very different. Drag over all, is not something you can tell from one ball, or even a dozen. And once you take human beings out of the equation, that baltiball variation is not an issue in the way.
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