There's a heck of a lot of luck underlying Zambrano's numbers since his return. While his BABIP in August was a relatively normal .306, his BABIP in September has been an unsustainable .206. His FIP in August was 3.68, while it was 3.28 in September, in contract with ERAs of 2.23 in August and 0.93 in September. For those of you less statistically inclined, his BB/9 in August was 6.40 and 4.23 in September. I'm glad Zambrano is doing well, but I'm skeptical about whether he's turned it around.