"Aaron Rodgers' 2018 struggles mirror Zack Greinke's experiment with FIP"

APC:

Zack Greinke is one of my favorite baseball players of all time. Not everyone shares that opinion, as Greinke has some social anxiety issues and he rubs a lot of people the wrong way; but he’s a fascinating quote-machine and almost certainly one of the most cerebral, and interesting people in baseball. Greinke has always had a deep interest in scouting and Sabermetrics

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Perhaps my favorite thing Greinke ever did, was to conduct an experiment with his pitching over the course of a few seasons. Greinke has been good for ages, but it was never enough for him to be good — he also wanted a deep understanding of why he was good and how he could get better.

For those of you who don’t follow baseball, we know that there are a few things that pitchers have control over and a few things they don’t. That’s a bit of an oversimplification, and modern research has revealed that it’s more like there are some things they control a great deal, and some things they control less — but the point stands, and at the time Greinke did his little experiment he relied on FIP (Fielding Independent Pitching):

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Greinke’s theory was that by focusing on the elements of FIP, that he could make himself even more efficient than he already was. That’s not how it worked out.

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So why didn’t Greinke’s strategy work, and what does any of this have to do with Aaron Rodgers?