Fans who really follow the Arizona Diamondbacks know all about their young crop of pitchers. Archie Bradley, Aaron Blair and Braden Shipley are the three names we have heard the most about in anticipation of their Major League debuts. Bradley indeed saw time for the D-backs but it was another rookie that made the biggest impact for the team in 2015. Left-hander Andrew Chafin was a wild card and did not really have a set role when Spring Training broke. He pitched as a starter for most of his Minor League career and made three starts for the team in 2014.