The Astros are planning to start a left-handed reliever in Tuesday’s game against the Marlins.

Steven Okert and Bennett Sousa are seen as the top candidates by MLB.com’s Brian McTaggert. It’ll be the first time the Astros have used a true opener this season. The team does have AJ Blubaugh on the taxi squad to potentially pitch as a bulk guy tonight, but he’s yet to be officially activated. If Blubaugh is activated, he’d still probably be sent down tomorrow to make room for Spencer Arrighetti.