Dylan Bundy, the Oriole's first round pick last year in the draft, is doing pretty awesome, if you haven't heard. Seriously, just look at this line: 19 years old, 30.0 innings, 5 hits, 2 runs (0 earned), 19 years old, 2 walks, 40 (!!!) strikeouts, 0.00 ERA, .233 WHIP, and did I mention he's only 19 years old? There's just one question: why is he still in single A?
No, seriously; I know it's pretty cool to see a player post those numbers. But, at the same time, that's usually a good sign that the player isn't actually being challenged. Is dominating hitters at A really that much better for his development than doing reasonably well against AA batters? Why not call him up? You'll get a better idea of where he is in his rise to the majors. I would imagine keeping him in A is only slowing him down at this point.