You do realize that what Sano is going through is pretty normal for prospects in general? Even the top prospects tend to struggle, and Sano had his moments last year as well. He hasn't had that issue this year until his promotion, so I'm not too concerned, and at this point you shouldn't either. He also just made one of the most difficult jumps a prospect can make... And yes, age matters, especially when you are dealing with a 20 year old kid. Most men are not done developing physically until their mid 20s, and that makes a huge difference when he's playing against guys much further along in that cycle. That said, I wouldn't be surprised at all if his struggles last most of the remaining season. To an extent, it's expected. It essentially means that we won't see him in Minnesota opening day 2014. That really isn't the end of the world. If he really struggles into next year, his rankings will start to drop, and it would be justified. Right now, though, I'm not worried about it.