Royals take the top 3 spots.

1. Mike Moustakas, 3b, Northwest Arkansas Naturals (Royals)
2. Eric Hosmer, 1b, Northwest Arkansas Naturals (Royals)
3. Mike Montgomery, lhp, Northwest Arkansas Naturals (Royals)
4. Wilin Rosario, c, Tulsa Drillers (Rockies)
5. Martin Perez, lhp, Frisco Roughriders (Rangers)
6. Aaron Crow, rhp, Northwest Arkansas Naturals (Royals)
7. Jordan Lyles, rhp, Corpus Christi Hooks (Astros)
8. Simon Castro, rhp, San Antonio Missions (Padres)
9. Blake Beaven, rhp, Frisco Roughriders (Rangers)
10. Christian Friedrich, lhp, Tulsa Drillers (Rockies)
11. Cory Luebke, lhp, San Antonio Missions (Padres)
12. Jordan Walden, rhp, Arkansas Travelers (Angels)
13. James Darnell, 3b, San Antonio Missions (Padres)
14. Eduardo Sanchez, rhp, Springfield Cardinals
15. Rex Brothers, lhp, Tulsa Drillers (Rockies)
16. Louis Coleman, rhp, Northwest Arkansas Naturals (Royals)
17. Charlie Blackmon, of, Tulsa Drillers (Rockies)
18. Engel Beltre, of, Tulsa Drillers (Rangers)
19. Wynn Pelzer, rhp, San Antonio Missions (Padres)
20. Trevor Reckling, lhp, Arkansas Travelers (Angels)

http://www.baseballamerica.com/today/prospects/rankings/league-top-20-prospects/2010/2610776.html