The Twins put Santana at AAA because he makes lots of errors at shortstop and they wanted him to make fewer errors and be more consistent. So, they bring him up and Gardenhire says he's going to have him playing multiple positions. Why? So, he can never master any of them? Why not let him become what they really need, which is a polished shortstop with offensive ability? And, if he isn't ready to do that at the major league level, he should be doing it in AAA.