UZR average

[bam0213nyc]

This is commonly used among the users at nyyfans, and I keep finding myself wondering what it means, and how does it work.

[Irony Of It All]

http://www.baseballthinkfactory.org/files/main/article/lichtman_2003-03-14_0/
http://www.baseballthinkfactory.org/files/main/article/lichtman_2003-03-21_0/