Manager Chip Hale announced Sunday that Corbin will move to the Diamondbacks' bullpen.
In his last three starts, Corbin has surrendered a total of 11 earned runs, but his defense has made it look even worse, adding seven more unearned runs to that line. In any case, the southpaw and his 5.58 ERA now appear to be slated for long relief, though the team has yet to announce a replacement option in the rotation.