Marsh is out of the lineup for Monday's game against the Nationals.
The left-handed-hitting Marsh had been seeing fairly steady opportunities against left-handed pitching earlier this season, but he's moved into more of a strong-side platoon role since the All-Star break. With southpaw Andrew Alvarez on the bump for Washington, Edmundo Sosa will get the nod in left field over Marsh, who is slashing .231/.270/.370 (72 wRC+) over 115 plate appearances versus lefties.