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THE BOOK--Playing The Percentages In Baseball

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Thursday, August 12, 2010

Latest Replacement Level thread

By Tangotiger, 09:58 AM

Jeff weighs in.  His thought process is right on.  I just don’t know if the end-result is any difference.

***

To reply to Peter in the comments of that thread: I agree.  Suppose someone is +30 as a RF.  What would he be as a CF?  Would you believe +30?  If you took all the RF and moved them all to CF, they’d each get 33% more chances.  So, the +30 RF becomes +40, and the -30 RF becomes -40.  Now, suppose that you leave the +30 RF in CF, and restore all the other CF back in CF.  Those guys are good.  His +40, compared against all the other RF in CF will drop down to +30 when compared to the real CF.  Had you instead left the -30 RF in CF, he would come in at -50 in CF.

Here’s a very very old article on the subject.  It’s worth a re-read (though don’t pay too much attention to the numbers, as things have been revised since then).

(6) Comments • 2010/08/12 • SabermetricsFieldingTalent_Distribution
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August 12, 2010
Latest Replacement Level thread