[IBL] defensive stats spreadsheet

[Sean Sweda]

I've created a spreadsheet with the important defensive stats from FanGraphs:

https://docs.google.com/spreadsheets/d/1Wcl1R0qHwoXJ65oMtt9pVmXSv8LTErgN3vphu4L2nFA/edit?usp=sharing

The "rate" columns are the number of plays above/below average for RZR & OOZ, pro-rated to 100% playing time.  The total is these two columns added together.  This will not tell you exactly what defensive range rating a player will receive, but it should give you an idea of whether a player was good (large positive total), average (total close to zero) or bad (large negative total).  It should also make it easier to compare players to each other.  

Caveats:
* Remember that the fewer innings a player plays in the field the harder it is to get a good range rating.
* Outfielders are no longer going to receive separate LF/RF ratings, their range in LF/RF will be the same and based on aggregated data.

Also, keep in mind that while this is the primary data used to generate defensive range ratings there are adjustments that are applied before the final ratings are generated.  Furthermore, there's always a possibility that there will be tweaks in the future.

Make assumptions about final ratings at your own risk.  


Here are some blog posts with additional background info if you're interested:
http://www.ibl.org/~sweda/2014/03/combined-lfrf-rating/
http://www.ibl.org/~sweda/2010/11/mapping-defensive-range/
http://www.ibl.org/~sweda/2009/12/range-rating-adjustments/

Sean