Triggs and Alcantara will slot behind Kendall Graveman, Sean Manaea and Jharel Cotton. Hahn, meanwhile, will begin his season in Nashville for a second straight year after struggling in his past two Cactus League outings.
"It's disappointing for sure, because I set a goal this spring, and that was to make the rotation," Hahn said. "I didn't do that, but I can't get down on myself. I have to stay positive. I know these last two outings didn't go the way I wanted them to, but I'm going to keep my head up high and go down there and work on what I need to work on and do what I need to do to get back here.