Arizona Diamondbacks Prospect Watch

5. Peter O’Brien- O’Brien started off this year in AAA Reno and is still there as of now. The catcher and 1st baseman has had tremendous success at the plate hitting .346 with 11 home runs. He has over 45 RBI making him a threat at the plate. He is mainly sticking to the catcher position but can also play 1st base and the outfield. O’Brien could be up very soon if he keeps up the pop in his bat.