Pitch Count Theories

Someone asked me about pitch counts via email today. My short answer is "I don't know." My longer answer is that the pitch count topic is one of those things that definitely matters, but we haven't been able to control for all the variables in order to say how much and for whom to any significant degree. To help understand the issue, I found the following links, which might be useful in understanding all the problems involved with analyzing pitch counts.

Short Term Pitch Counts

Long Term Pitch Counts

Hardball Times Series:

Baseball Prospectus also tracks PAP (pitch abuse points) so you could fool around with those numbers:

And here's a good discussion of PAP pros and cons:

Are there any other studies I'm missing? Feel free to link to them. Any additional points to make? Any ideas for further study?

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