Marshall isn't starting Thursday's preseason game against the Jazz, Grant Afseth of DallasHoopsJournal.com reports.
Marshall struggled from the field in Monday's exhibition against Memphis, going 4-for-11 in 21 minutes as a starter. He'll shift to a reserve role Thursday alongside Daniel Gafford, while Olivier-Maxence Prosper and Dereck Lively draw starts in the frontcourt.