I have been super busy with work and life in general and have neglected writing far too much. This afternoon I had the time to have a little fun with excel and the wealth of data that is Fangraphs.
I have always been curious how much winning percentage is associated with fWAR and decided that now would be a good time to take a look. I pulled the data from the last 3 years for pitching seasons with at least 100 innings thrown. I then plotted the data and took a look at the correlation.
So I proudly present the correlation between fWAR for pitchers and Winning Percentage:
A high winning percentage usually means that a pitcher did well as does a low winning percentage usually means that a pitcher did poorly but this is not always the case and in the data set that I have here it seems that high winning percentage is more often than not a a false signal for a good pitcher.
Here are all the pitchers who had a winning percentage of 0.6 or greater with at least 100 innings pitched:
So in the end this was a fun little experiment. We found that there is a relationship between winning percentage and fWAR which makes sense but that it really doesn't tell us more than what we already knew, that good pitchers will tend to have higher winning percentages but that doesn't mean people with low winning percentages are bad or that pitchers with high winning percentages are good.
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