Musgrove will undergo and MRI on his injured right elbow Thursday, Jeff Sanders of the San Diego Union-Tribune reports.
Musgrove had to depart Wednesday's start versus Atlanta due to what the Padres are referring to now simply as right elbow tightness. Initial testing on his UCL came back clean, but more clarity will be available following Thursday's exam. For what it's worth, Musgrove said the discomfort he felt Wednesday was "very different" from the pain he experienced due to a bone spur in his elbow which sent him to the injured list twice earlier this season. The pitcher also revealed that he'd been battling some soreness in the elbow prior to the outing. If Musgrove needs to be replaced on the NLDS roster, Martin Perez is a candidate to fill that slot.