19-year old righty starter Jarrod Parker is the #2 prospect in the Diamondbacks’ minor league system according to Baseball America’s Prospect Handbook and he is off to an outstanding start this season. Parker has started 5 games in A-Ball this season and he is 2-1 with a 1.31 ERA and a 1.02 WHIP. Parker also has exhibited outstanding control this season as he has only walked 2 batters and whiffed 19 in 20.2 innings. The Diamondbacks will probably take it slow with Parker as he is still pretty young but he has a huge upside.