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THE BOOK--Playing The Percentages In Baseball

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Monday, March 15, 2010

Jacoby Ellsbury, saberist, but very very late

By Tangotiger, 08:17 AM

Obviously, not a single person has explained to him how it works, because if they did, well, then he’d have to come to some sort of realization:

“I haven’t really looked into it, but from what I understand, a deep fly ball into right field, if it’s sky high, that’s looked at as the same amount of range as a line drive that’s caught. How do you break that down?

“To me, it really can’t be accurately measured. What’s the difference with shifting? If you just take a diagram, if the strategy for the team is to play deep or play shallow, how does that factor? There are a lot of things that factor.

“What happens if it hits the Monster? It’s only X amount of feet, but you’re saying that another outfielder would have caught that ball. Well, I couldn’t because there’s a 50-foot Wall right there. How do you judge that?

“Maybe over time, they can take some of the kinks out of it.  But for now, in my opinion, I don’t think it’s very accurate.”

For the record Jacoby, we watch the same game you play, and we:
1. Do NOT treat a line drive like a fly ball
2. Some metrics MAY use shifts if available (though most treat positioning as a player skill, not a manager skill)
3. Fielders are compared to other fielders in the same park

The “over time” has already happened.  So, Jacoby does ask the right questions.  That’s #1 in being a good saberist.

We also look to see if you have a GB or FB pitcher on the mound or even the actual pitcher, some of us look at who’s hitting or his handedness, the base/out situation.  Even hang time if that’s available. Really, we’ve got it pretty well covered.

Why ask a driver about his car when you can go to the guys testing the cars?


#1    Adam      (see all posts) 2010/03/15 (Mon) @ 10:37

I wonder what he would be saying if the metrics rated him a good fielder instead of a poor one.  Would he still have these qualms?


#2          (see all posts) 2010/03/15 (Mon) @ 10:37

Is it legitimate to treat positioning as a player skill rather than a manager skill? Do we have any idea how often positioning is something dictated by the manager via the coaches? Are there great differences in way clubs position their players in given situations against the same batters? For example, are there many cases where Club A plays a given batter to pull, while Club B plays him to hit straight up? Lastly, how much error is introduced in a player’s estimated defensive ability by assuming that positioning is a player skill?


#3    Adam B.      (see all posts) 2010/03/15 (Mon) @ 12:32

Sounds like Jacoby knows ZR but not UZR.


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