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THE BOOK--Playing The Percentages In Baseball

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Monday, April 21, 2008

WOWY Ripken

By Tangotiger, 10:06 PM

One of my issues under consideration is how to handle the situation when the “without” is alot smaller than the “with”.  WOWY(*), as you know looks at a player’s performance with some parameter and without.  Let’s take the case of Cal Ripken, and some his pitchers (guys who pitcher predominantly, or totally with the Orioles, with Ripken as his shortstop).  One such pitcher is Jeff Ballard.  He had some 70 innings without Ripken as his shortstop and 700 with.  Normally, I scale the “without” data to the “with” because I want to keep my “with” untouched.  I want his actual innings, and outs, and balls in play to reflect his actual totals.  But, in cases like this, I’m very uncomfortable scaling up by a factor of 10 the “without” data. 

I have some options here:

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(11) Comments • 2011/07/19 • SabermetricsFielding
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April 21, 2008
WOWY Ripken