What does the following stats mean:

ERC

ERC+

ERA

ERA+

The reason I ask is because the stat ledger is hardly helpful. thanks.

let me introduce you to my good friend, Mr. Google. he'll be nice and gentle.

and btw, if you dont know what ERA stands for, you're going to be in a world a hurt around here

ERA is number of earned runs allowed per 9 innings pitched (runs not attributable to errors). ERC is a term coined by Bill James, the father of sabermetrics, which attempts to forecast a pitcher's future ERA from the number of hits, walks and HR's allowed and K's recorded, rather than earned runs per 9 innings. I'll skip the formula, which is Tutorial B.

ERA+ is simply a pitcher's ERA adjusted according to his ballpark and the ERA of his league as a whole (e.g., normalized). ERA+ gives a pitcher credit for pitching well in a hitter's park, performing significantly better than his league average, etc. and dings him for pitching in a pitcher's park or underperforming the league average. ERC+ is basically the same normalization process applied to ERC. That's an oversimplified answer, but it will give you the general idea.

Quote: Originally posted by thunder1008 on 12/27/2009ERA+ is simply a pitcher's ERA adjusted according to his ballpark and the ERA of his league as a whole (e.g., normalized).  ERA+ gives a pitcher credit for pitching well in a hitter's park, performing significantly better than his league average, etc. and dings him for pitching in a pitcher's park or underperforming the league average.  

I think the WIS version of ERA+ doesn't use ballpark normalization. It is just the pitchers ERA divided by his league's ERA times 100.

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It's actually the league ERA divided by the pitcher's ERA times 100. Big numbers are better.