For those uninformed: Jacoby Ellsbury is a godawful center fielder, according to UZR, Fangraphs' fielding statistic of choice. UZR has Ells at 16.5 runs below average in 153 games at center in '09, making him one of 3 CF with a UZR below -10.0, the others being Dexter Fowler and Vernon Wells. Ellsbury's noodle arm didn't exactly help him out here, but the main reason Jacoby's UZR was so poor was his -14.0 RngR, or Range Runs Above Average. The first time I saw that number, I was pretty much shocked; how could such a fast guy have such poor range?

UZR tends to have really weird fluctuations; observe Raul Ibanez's UZR in LF go from okay to good to bad to absolutely horrible to good again. It's also worth noting that Ellsbury posted a positive RngR in 66 games at center last year. So, is Ellsbury really this bad at center, or can we chalk this up to wonky UZR data/Jason Bay having zero range/Julio Lugo?