I don't think they are the be all end all either, but the fact that the fans, UZR, and DRS all say he is far and away worse than any other starting SS in baseball has to mean something. Using three statistics probably does take some of the noise out of these statistics. You continue to bring up the year to year correlation as a reason not to use these statistics or to question their validity. That's why people generally don't (or shouldn't) use them on a year-by-year basis. Over three or four years, these statistics are much more accurate, and over three or four years, these statistics have said Yuni is awful at defense. They're obviously imperfect and probably nowhere near as good as FieldFX, but when all of them say Yuni has been that bad I think it's pretty telling. Like Rluz said, I think this is pretty much us just rehashing the same "Yuni is terrible" vs. "Yuni is bad" conversation. If some day FieldFX is made available, we'll be able to settle this whole Yuni debate with more precision.