Scientists often laud the merits of longitudinal studies. The ability to follow a subject for years, collect data and report on findings is vital for the advancement of scientific knowledge. With that in mind, Baseball America decided to report its own results. We looked back at our 2003 organizational rankings, then flashed forward five years to see how all 30 teams fared on the field, and how they look for the future. Teams are listed in the order of their 2003 minor league talent rankings, with five of the best prospects from the 2003 Top 10 Prospects lists (in the order they appeared) and 2008 records.