There’s an interview with Michael Lewis on Athletics Nation. Good stuff. Makes you wonder what tools the As have for evaluating defense. Clearly if one strategy is not giving up outs through offense, a counter is creating outs for the other team through defense. And since Moneyball was about finding market imperfections to maximise the value of your dollar and the high-OBP market is already tapped out (hello, Sox, LA, & Toronto) the next logical step seems to be defense, which is rated very unsystematically at present, UZR notwithstanding..