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Thursday, January 27, 2011
Goodbye ERA
You guys know that I can’t stand ERA (because of the biased, arbitrary, and capricious nature of ER v UER). And, the only reason I keep referring to it is because it’s name is so ubiquitous, and its scale is so standard. Over in the comments area, Kahrl referenced “RA9”. I immediately loved the name. Googling RA9 ERA baseball, and scant hits came back. There was one article by Kahrl on BPro, a comment by a Fangraphs reader acerimusdux, and a few others later on.
What would it take for us to start using RA9 as the term, and using it in place of ERA? Do we simply need Fangraphs and BPro and B-R.com to provide so its use will become secondary? And, I suppose RA9+ as well (or RA9# to make sure we divide by the league average)?
Or can someone come up with something even better than RA9? Remember, you can’t use RA, because that can easily be a counting stat called runs allowed.
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