Muncy is absent from the lineup for Monday's game in Arizona, David Vassegh of AM 570 LA Sports reports.
Muncy is not in strict a platoon, but he has now been on the bench three times in five games versus lefties since returning from the 60-day injured list last month. He served as a pinch hitter in one of those first two contests and will be a candidate to enter mid-game again Monday. Enrique Hernandez is getting the start at the hot corner in Monday's series finale.