John Sickels puts together his list of Top-20 Pittsburgh Pirates prospects over at minorleagueball.com

1) Pedro Alvarez, 3B, Grade A
2) , OF, Grade B
3) , C, Grade B
4) Zack Von Rosenberg, RHP, Grade B-
5) , RHP, Grade B-
6) , RHP, Grade C+
7) Chase D’arnaud, INF, Grade C+
8) Starling Marte, OF, Grade C+
9) Rudy Owens, LHP, Grade C+
10) Ronald Uviedo, RHP, Grade C+

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