Doc, the following below is reprinted from another thread, but I think appropriate to contrasting your main thrust. Isn't there some kind of happier roster-makeup-medium between the current Twins and current Marlins?: Uhhh, Pino was in his 8th year of AA or AAA ball counting this season, are we really sure that being LHP is the only difference? Heaney is 23 and it's reasonably logical that he hasn't yet approached his ceiling, and that isn't just my opinion: Feel free to put all of your faith into Pino, but there are multiple reasons the Twins have never had a Starting Pitcher make his major league debut at age 30.5 before. You're missing the point of my argument. The Marlins aren't debuting any 30 year old career minor leaguers, they are breaking in a passel-full of quality pitchers with high upside at very young ages- including yesterday, promoting their #1 prospect to the already-good Starting Rotation. FYI, the Marlins currently have 9 pitchers, age 24 or younger on their 25-man or DL. And that total rises to 12 on the 40-man. By contrast, the Twins have- ZERO, ZIP, NADA under-24 pitchers on their 25-man, and all of two, both age 24, May and Tonkin, on their 40-man roster.