Arizona Diamondbacks preliminary prospect grade breakdown

I am working on the Arizona Diamondbacks Top 20 Prospects list for 2015. Here are how the 40 grades currently break down:

Grade A: zero
Grade A-:  zero
Grade B+: four
Grade B: One
Grade C+: 18
Grade C:  17

Yasmany Tomas is currently rated as a B+, however that is NOT final. I have a lot more studying and thinking to do about him.

Here are the guys I am writing up:

Arizona Diamondbacks 40 players

Nick Ahmed SS
Sergio Alcantara SS
Anthony Banda LHP
Jake Barrett RHP
Aaron Blair RHP
Zach Borenstein OF
Silvino Bracho RHP
J.R. Bradley RHP
Archie Bradley RHP
Socrates Brito OF
Enrique Burgos RHP
Andrew Chafin LHP
Kevin Cron 1B
Isan Diaz SS
Brandon Drury 3B
Kaleb Fleck RHP
Alex Glenn OF
Zack Godley RHP
Mitch Haniger OF
Oscar Hernandez C
Jose Herrera C
Jake Lamb 3B
Domingo Leyba SS
Will Locante LHP
Jose Martinez RHP
Jeferson Mejia RHP
Kevin Munson RHP
Peter O’Brien C-1B-OF
Dan Palka 1B
Matt Railey OF
Robbie Ray LHP
Cody Reed LHP
Jimmie Sherfy RHP
Braden Shipley RHP
Yasmany Tomas OF
Touki Toussaint RHP
Stryker Trahan OF-C
Garrett Weber 2B
Blayne Weller RHP
Marcus Wilson OF