Part of the problem is whatever the big league team is preaching to the hitters, it's not working.
If you look at the young guys who come up, they typically get off to a fast start, adjustments are made and they fall off a cliff. Lewis was the outlier but he's a special player. Guys like Julien, Wallner, Kirilloff, Larnach, Miranda and Martin have had stretches where they don't look like major league hitters. Why is that?