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Tangotiger Blog

A blog about baseball, hockey, life, and whatever else there is.

Friday, January 22, 2016

In-season aging for older players

?I like the initial concept, I like the targetting of the players.  The use of tOPS+ and then trying to adjust it seasonally, I think, was not done with enough care.  Seeing the monthly results supports by skepticism.

First, I'd go with wOBA.  Secondly, I wouldn't try to adjust it yet.  Never start by adjusting.  Keep the adjustment for later, otherwise, we don't know what's really going on.  Thirdly, use the delta method, weighting the data by the lesser or the two PA (or the harmonic mean).  Fourthly, introduce a control group, say players aged 26-29.

So, great start, but I haven't been sold on anything (yet).

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January 22, 2016
In-season aging for older players