Hearn will start Sunday against the Astros, Kennedi Landry of MLB.com reports.
Hearn will draw his second start of the season, though it's hard to see him working deep into the game. While he regularly throws multiple innings out of the bullpen, Hearn has not completed more than two frames since April 12. Mike Foltynewicz is available out of the bullpen and could also chip in several innings if needed, according to Landry .