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Originally Posted by Cedric
No offense, but the objective data is pure bull****.
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ah, all three are wrong and there is no way to evaluate defense outside of subjective evaluation?
Each metric has it's shortcoming but dismissing them out of hand instead of understanding what each is telling and while taking into account what they do not. Using the three of them together can present a picture of what an indivuals defense looks like in comparison to others.
FLD% tells nothing about balls a fielder cant get to
RF does not take into account what type of pitchers a team has (do they tend FB or GB )
ZR really can't adjust for how hard a ball was hit(even though ot accounts for flys vs liners) or where a fielder may have been positioned in a zone at the time of the AB.
These shortcomings do not invalidate the data, one just has to understand what they say and what they do not say. However, dismissing them out of hand instead of using them to try to create a picture of defensive ability is a bit hasty.