THE BOOK--Playing The Percentages In Baseball

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Reliability of UZR

By Tangotiger, 10:49 PM

Someone asked, I replied:

400 balls in play for fielding stats is as reliable as 200 PA for a hitter in batting stats.

For a SS, 400 BIP is 80 games. For a corner OF, 400 BIP is 130 games.

200 PA is a bit under 50 games.

So, yes, I definitely said 2-3 years of fielding stats is as reliable as 1 year of hitting.

(71) Comments • 2010/09/24 • Sabermetrics • Fielding

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