What is your opinion of the A.J. Pierzynski signing?
MJH on accountability
In an effort to better understand some of the more sophisticated stats, I thought I'd ask whether anyone can explain why Weaver's xFIP (3.53) is so much higher than his FIP (2.43) and ERA (1.9). I have a basic understanding of the difference between FIP and ERA and agree that FIP is a better indicator of actual quality (see Matt Harrison). But I'm not used to seeing such large discrepancies between FIP and xFIP.
I also find it unbelievable that according to xFIP, Jared Weaver (3.53) is only slightly better than Derek Holland (3.9) and Matt Harrison (4.01), and he's worse than CJ Wilson (3.37). Are you kidding me?
See if this helps.
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