My SB Nation colleague, John Sickels, has a great mid-season analysis of how his preseason Top 20 Angels Prospects has been faring.
Like everyone else, John missed on Mike Napoli, underscoring how the whole game is more hunch than science.
Regardlesss of that oversight, though, there is quite a bit at that link in which to sink your teeth.
I am left with the feeling that the Angels will be trading Jeff Mathis (he of the current .307 batting average in Triple A) very soon.