Murphy is expected to work as the primary pitcher in Sunday's game against the Blue Jays, Ian Browne of MLB.com reports.
Manager Alex Cora previously suggested that Murphy would work as a primary pitcher behind opener John Schreiber in Saturday's 5-4 loss, but Murphy ended up going unused while Nick Pivetta handled the bulk role. The Red Sox are treating the series finale Sunday as another bullpen day, so Murphy looks like he'll get a chance to pitch extended innings for the first time since July 30.