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The Rays' defensive efficiency (DER) sits at .735 right now. For those of you that don't know, this...

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The Rays' defensive efficiency (DER) sits at .735 right now. For those of you that don't know, this is essentially the defensive end of BABIP (or 1-BABIP). That means that our defensive BABIP is .265. To put that in to context, no team has had a team defensive BABIP below .270 since the Mariners notched a .269 in 2003. No team has bested our current pace since the Mariners posted a .260 in 2001 (when they set the record for regular season wins). So the Rays' defense/pitching is either really phenomenal or getting lucky (or both). Knowing what we know (that the Rays have been top 3 in this regard the past 3 seasons and have improved defensively at short and first), I tend to think that we could be seeing an all-time great defense.

me h/t to Reej for pointing out our defensive efficiency
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