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Posted 18 October 2010 - 01:58 PM
Fangraphs uses Park Adjusted Runs Above Average based on wOBA to calculate the offensive component and UZR to calculate the defensive component. You can learn more about it here and here.
Baseball Reference uses the Sean Smith’s WAR data. You can learn more about how it is calculated here and more about Sean Smith here.
Posted 17 September 2011 - 08:26 AM
Pedroia's line today looks like this: 28.6/-0.8/17.4/22.5/2.2 = 69.9 = 7.4
Posted 28 March 2013 - 09:58 AM
And this now led to B-R and Fangraphs to unify their replacement level baselines. This also means that historical WAR figures have changed, and career WAR for many players have changed significantly.
Posted 10 September 2014 - 12:07 PM
Wanted to post this here from the Passan thread in MLB.
Tango posted this on pitcher WAR today because of the Passan article and explains more of the differences between the two.
First, I’m thankful that Passan has talked [/size]about WAR, and written a good article about it. I’m also thankful that he made some mistakes, because I’m sure there are plenty of other people who make those mistakes. This gives me a chance to correct their misconceptions. Here’s one that he said:
Passan - "Cueto in fWAR is mostly his home run rate – .84 per nine innings – and the apparent disregard of its calculation for innings pitched."
I’m not sure why he would think the IP is being disregarded, and why that would be apparent. If you look at the list of all pitchers, you will quickly see that the more IP you have, the more WAR you have. The BASIC formula for WAR is extremely simple:
WAR = (performance per unit of playing time MINUS baseline performance per unit of playing time) TIMES playing time
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