Candelario will be added as the 26th man for Tuesday's doubleheader with the Rockies, Carrie Muskat of MLB.com reports.
MLB rules allow teams to add a player to their 25-man rosters for doubleheaders, so the Cubs will call up Candelario. The young third baseman will provide depth on Tuesday, but is likely ticketed for a return to Triple-A Iowa after the two games.