Not going to finish the quote? So, when taking into account the defensive part of the game, hey, UZR measures what defense does (prevents runs) really well! Defensive stats are what they are, Dewan himself puts them at about "60% of the truth", but they are still much, much better than simply looking at fielding percentage, and they are improving every year. Fly balls are now measured by time in the air, along with location. Ground balls now include a speed component (slow, medium, hard). Pos just made a long, rambling, awesome blog post on Dewan's Plus/Minus. If you don't think that's better and more informative than "Oh, he threw it bad or bobbled it 9 times out of 243" then I suppose I don't know what to tell you. Ryan Braun did not make an error last year. If you think he's even close to being a decent defender, I am not sure what to tell you. I haven't heard much since this article was written, but if those cameras are in place everywhere (they were supposed to be for this season), there will be a huge coup in defensive stats once the data becomes available.