UZR is not a good measure for MIF, because the formula somewhat overrates arm strength, which is why i didn't cite UZR numbers for Peralta/Infante, even though over such a sample size, Peralta's numbers seem more legit. Dirks is a "body of work" case: He had a really bad overall defensive ranking prior to this year, and doesn't pass the eye test. Given the defensive statistics though, he's probably improved significantly, and is a lot better than we're giving him credit for.