If UZR has that many issue UZR is garbage. There, I said it.
Just remember
Things to Remember:
● Beware of sample sizes! If a player only spent 50 innings at a position last season, it’d be a good idea not to draw too many conclusions from their UZR score over that time. Like with any defensive statistic, you should always use three years of UZR data before trying to draw any conclusions on the true talent level of a fielder.
http://www.fangraphs.com/library/index.php/defense/uzr/Since the average career length is just shy of 6 years (
http://www.nytimes.com/2007/07/15/sports/baseball/15careers.html) you should know if someone has a decent glove about halfway through- so good stat to argue player x belongs in the hall, worthless to look at current players