If he continues to hit does it matter much whether he's committing lots of errors in A ball? I'm reminded of Miguel Sano whose errors at third were just piling up in A ball. Every night it seemed like he got another one. But scouts thought he could stick, so the team kept putting him out at third, growing pains be damned. After all, think of how his bat will play if he sticks at third. Same thing with Polanco - think of how his bat will play if he sticks at short. At this point, I don't think either Goodrum or Michael are in the same class of prospect as Polanco; if either of those two make it at all, it will likely be as a backup or utility type. I'm all for giving Polanco a long time to work out the kinks.