There will always be people who will say to bring up a deep minor leaguer because he's doing so well there. The thing about that is that it's easy to ruin a baseball player by bringing him along too fast. As has been said many times by many people, baseball skills take much longer to mature than is the case in the other three major North American team sports. (With a few exceptions, for example NFL QB's.) The best way for a baseball player to realize his potential is to play against competition at or slightly above his level. This year's unexpectedly good W-L record notwithstanding, I think this organization needs to place development of its young talent as the highest priority and that means playing its prospects at the best level for their development unless the major league team has no other options. I think the Twins are indeed doing that. (Witness the likes of Bernier, Nunez, Schafer, Robinson and others on the major league roster. All are essentially placeholders.)