I'm not sure about Buchholz as number 1. His advanced metrics don't support the numbers he's posting. But I've heard that, for some inexplicable reason, he's been going to his fastball and slider more in two-strike counts, instead of his curveball and changeup (which are dirty out pitches). So, perhaps that strikeout rate may be rising given a change in approach (he destroyed the Angels a couple days ago on his changeup); until that happens, I won't be convinced he's a low-3's ace pitcher.