The Diamondbacks informed Devenski on Monday that he would be included on the Opening Day roster, Jody Jackson of FOX Sports Arizona reports.
The non-roster invitee secured his spot in the Arizona bullpen after he allowed seven baserunners while striking out seven across seven scoreless innings this spring. Devenski isn't believed to be a factor in the Diamondbacks' unsettled closing situation, but he could gain traction in a setup role early on during the season.