I think Slateman's point - which I share - is that if the guy doesn't learn to play SS now, he's not going to ever have a chance to be a major league shortstop or he's going to have to learn via an ugly process while in MLB.
Right now it looks to me like his bat and glove are roughly apace for playing SS at MLB level. If you put him at 3B, his glove will fall behind. And if you put him at 2B or 3B, he needs to hit significantly more to be a useful player. Right now, he's fairly close to being a viable MLB shortstop, maybe a year away. At 3B or 2B, his bat might need longer than that.
fair enough, but I assume they expect Castro to only be away for a short time.
