It doesn't take much evaluation to point out that a guy has thrived at each of the lower levels, plays a premium position, and is very young. As for the Castro comparison, the one thing that Amaya has on him, and seems to have had going for him all along is OBP, which this organization values highly. Second base is a premium position? In the only league Amaya and Castro have both played in (AZL at age 18), Castro walked 14 times in 215 PA while Amaya walked 13 times in 227 PA. Castro had a better IsoD wen you compare their rookie ball seasons. Castro showed better patience; Amaya had a higher OBP because he hit for better average but I think we all know Castro had and has a better hit tool. Up until this season, he's played as much SS as anything else. Between Castro and Baez, we seemingly have SS locked up long term one awy or another. With all of the other high ceiling MI prospects we have: Amaya, Hernandez, Alcantara, Torryes, and Lake, who is still considered high ceiling in my book, they can't all play SS. Again Amaya is a quality prospect- glad we have him, excited for what could do, and interested to see what happens along the way. A MIF prospect in SS ball in your top 20 is not bad whatsoever. Very few good farm systems will have a short season prospect in their top 5(that wasn't a recent draft pick like Almora)-Sano for the Twins comes to mind because he had/has ELITE potential. It just comes down to how far away that really is. I'm very excited for Amaya, but I tend to agree with the posters that included him in the top twenty and had players like Jackson, Vitters, Szczur, Alcantara ahead of him. That isn't a knock on Amaya. He will get every opportunity to succeed. The reason Candelario is ranked higher by many is because his ceiling looks higher, but even he isn't top 5 for me. If you want to put Amaya top 5 for you, that's cool. It just seems like this is the gist for why he isn't as high for other posters/publications.