1. What does DER stand for?

Defensive Efficiency Rating

A baseball statistic that refers to a team's defensive efficiency.

The DER indicates how good a team is at recording defensive outs from defensive opportunities. To calculate the DER, you divide the total number of hits allowed in play (no home runs) by the total number of defensive opportunities (any ball hit in play but not including home runs) and subtract from one.


They need to get back to basics, they have the lowest DER in the league.

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Updated May 6, 2015
2. What does der mean?


A term used when trying to say that something is stupid or overly obvious; means the same as "duh."


Der...I think we all get it, John.

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Updated August 1, 2014

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This page explains what the acronym "DER" means. The various definitions, examples, and related terms listed above have been written and compiled by the team.

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