I don't remember any of them getting a label as potentially the best anything of all time though. That's why at this point (especially with the AFL performance) I do consider Harper a can't-miss prospect.
here's weiters
How about this: after looking at the performance, talking to the scouts, and seeing what our numbers people were able to uncover over the offseason, Matt Wieters is the best prospect in baseball, the best player on the Orioles right now, and quite possibly the best catcher in the game. And he's yet to play an inning in the big leagues.
http://www.baseballprospectus.com/article.php?articleid=8453I'm too lazy to look up the rest
