More on regression, xFIP, HR/FB, BABIP, and the like by Derek Carty August 18, 2010 There’s been some good discussion going on today that I thought I’d bring to your attention. Chris Liss mentioned my post from a couple weeks ago on Dan Haren, luck, and randomness in a column at RotoWire, and some interesting debate sprang up in the comments. As usual, I ended up writing a book for my comment, so I posted the majority of it over at the CardRunners site as well. There’s been some comments on both sites since then, so you might be interested in checking the discussion out.