Yilber Diaz is expected to make his major league debut tonight. It’s been a meteoric rise, to be sure. Prior to this season, I doubt that anyone would have expected him to appear in the majors this year, and the jury was definitely out on whether he would appear at all. He needed to improve his control just to have a good chance at a bullpen shot.
He’ll be the third of Mike Hazen’s international signings to appear for the Diamondbacks this season, joining Justin Martinez and Jorge Barrosa. Barrosa was part of Hazen’s original international signing class, and Martinez signed the following year.