The third sabermetric stat he mentions is UZR (Ultimate Zone Rating):
Formula: Really complicated go here for more information
Goal: To calculate the batted balls cost or saved in each of those 64 zones during the course of the season, then determine each fielder's efficiency from his cost/saved total versus what it should have been. Ascreator Mitchel Lichtman says, UZR is "the number of runs above or below average a fielder is in both range runs, outfield arm runs, double play runs and error runs combined."
Flaw: A tendency for wile fluctuations in the year-to-year data.
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