Inside Yainer Diaz’s Lab: What Surprising Secrets Are Coming to Light?
First of all, I threw in a new category this time we have called BABIP (batting average on balls in play). The league average tends to hover around .300, but it is not uncommon for catchers to come in considerably lower than that. They won’t beat out many infield singles, so if you take an odd hit per week out here and there you can see a .270ish average being reasonable.
BABIP is also a function of your contact which we will get to shortly. Essentially, if your catcher is producing a 92 wRC+ you will likely live with that. That is a league wide stat and compares all players in the same bucket. There isn’t a position on the planet where a 68 wRC+ will fetch anything. The same is true for the weighted on base average. Those numbers can be interpreted like OBP but include a slugging element. A .273 mark is abysmal but maybe there are some underlying numbers that will bring us more news.
This biggest problem with Diaz is what I would label as isolated patience. It’s a number that you won’t find on the stats sites, but it gets worked into other numbers like secondary average. It is the difference between OBP and AVG. A .016 isolated patience is ludicrously low. The most patient hitters in the business will be over .100. Add that all up and it doesn’t look good.



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