Now you're changing the data again, which is fine I understand your reasoning on it, but you can't do that and then apply my comments the same. The truth is, you misapplied the stat initially and your second data set supports my label. It takes being an "ok" defender to last that many years as a starter at that position. Not everyone can be good, he fits well in the middle tier. (And that's being more complimentary of him than, say, defensive runs saved would be to him) Now perhaps 2012's number was out of character because of the injury. That would make sense. It's also possible that year's stats are important for the sample to be accurate. (UZR is a stat often considered to be a "more the merrier" stats) I'm not sure either of us is qualified to make that distinction, no?