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tRA Changed to tERA
Posted By David Appelman On February 10, 2010 @ 11:45 am In Site News | 24 Comments
As a few of you have noticed, tRA was on hiatus for a couple days. Now it’s back, but as tERA. Quite simply, tRA is on a runs allowed scale and not an earned runs allowed scale, which I believed caused some confusion, especially when I placed it right next to xFIP, which is on an ERA scale.
It seemed the natural thing to do was to compare tRA to ERA/FIP/xFIP and with tRA on a runs allowed scale that didn’t quite work, but now it should.
To convert back to tRA, just divide by .92.
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