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Robbie Marriage's avatar

My goodness this was detailed and thorough. It had to be read in several installments, which hopefully explains why this comment comes so late. Forgive me.

Immediately contradicting myself, the analysis was interesting in how it tried to explain a very complicated phenomenon with just a few simple numbers. It reminds me of when I reinvented the NFL's passer rating statistic, except your version can go all the way back in time, whereas my reinvention was for the explicit purpose of rejuvenating an ancient statistic for the new century. This was an entirely different idea, trying to paint all players across all eras with the same brush. While it does produce some galling results (i.e. 2024), at least it's conceptually strong.

My main criticism was also your main criticism. Holding the batting average requirement constant across all eras does not seem like the correct approach, although I understand what we were looking for was absolute excellence in line drive hitting, not line drive hitting+, if you will. We're not really worried about performance relative to the league average here, as much as we're worried about performance against an absolute standard that's always the same and never changes. That's both a positive and a negative, and comes with advantages and disadvantages. I'm not sure I would feel comfortable conceptually with adjusting one of the requirements for the league average, and not the other. Perhaps that would require some more thought.

I do think it's humourous that Fenway Park being such an easy environment for left handed batters to hit doubles seems to have crowned a few champions here. Maybe if you were looking to be perfect with this (and not at all time efficient), that could merit some adjustments for the park's double factor, although I've never checked if such a thing exists as far back as 1920, so it may ruin the entire framework.

Perhaps this is because I read the opening passages several days ago, but I also wonder why Home Runs are used as the currency here. To me, this (in conjunction with the batting average requirement) seems to reward the skill of ensuring that as many fly balls as possible are Home Runs, and never hitting fly balls that aren't Home Runs, although there is a minimum number of fly balls necessary to actually be able to win. I thought of all this because as soon as I learned of the framework, I thought Joey Votto would crush this competition, but he only won a single time. A cursory look through his baseball reference reveals that he didn't hit as many doubles as I thought he did, and that's fine. I have no particular fondness for Joey Votto. He just strikes me as a line drive hitter that this system missed a little bit.

I have no suggestion for what a better currency would be, meaning your choice is probably the best one, but something feels off when using Home Runs (the result of a fly ball) to determine the winner of a line drive hitting competition.

Beyond all those relatively minor criticisms, I was enthralled by the remainder of the analysis. I'm not sure being a line drive hitter actually means anything, but it's fun to know who history's best were, and perhaps there is a greater statistical relevance that I (a casual baseball fan) cannot see.

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David Harris's avatar

Robbie,

Thanks so much for reading it all and for such thoughtful feedback. My "like" signifies that I agree with more of what you said than not, and with all of the time I spent with this, you absolutely thought of about three times I didn't and which could be helpful to me. At one point, you even supplied a good counterargument to one of your critiques that I wouldn't have, which is the following....I'm totally on board with making BA relative, but yes, the Line Drive definition is supposed to be constant over time, so it wouldn't feel necessarily right to say a Line Drive Hitter in 1935 was one with a HR/2B ratio under 0.5, while one in 2024 was one with a ratio under 1. I guess it would depend on whether one thinks, like with batting average change, that home runs are up today not just because players are stronger, but because the ball carries better and fences are closer. I do believe fences are closer. I think the argument could go both ways about whether to adjust that or not.

A Line Drive Hitter isn't about the whole picture the way that passer rating is supposed to be. There's no question I show my background, and indirectly my age, working with old timey stats as a first instinct. I am someone who read a ton of Bill James truly "back in the day," and he used these stats partly because they were what there was then. Beyond that, sometimes one is just trying to have fun with something, but then the 20,000 length suggests one is taking it more seriously than one is. It was originally an exploration, and when one explores, one doesn't worry about whether what one is doing is stupid, or more sophisticated stats could be used. A pitfall, I suppose, is crossing over from the very admirable passion to arguing overly for the exercise's merit.

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