Rortvedt, might be the best comp, and he's on the JRM path as of now. There was some kid named Mauer too, but that was more than 10 years ago. I personally think the narrative of 'Twins promote too slow' is what needs to be dispelled here. It's clear that they do the case by case thing (and there's definitely an argument to be made that they did it wrong). But guys like Arcia, Berrios, Hicks, Buxton, Polanco, etc. all debuted at very young ages... There may be something more to this with pitchers than hitters, but then again, given the results we saw with our pitchers when they came up, I'm inclined to say that promotion speed wasn't the reason for the issues.