Marsh will start in center field and bat ninth in Sunday's game against the Athletics.
The left-handed-hitting Marsh was on the bench for three of the Phillies' last four contests, with each of his absences coming against a left-handed starting pitcher. He'll be back in the lineup Sunday against Athletics righty Gunnar Hoglund and looks poised to occupy the strong side of a platoon in center field with Johan Rojas moving forward.