Peterson's MRI on his sore left shoulder Wednesday revealed minor inflammation but no structural damage, Justin Toscano of The Bergen Record reports.

EDGE Analysis

The lack of structural damage is undoubtedly good news for Peterson and the Mets, though he'll still miss at least one more start while he remains on the injured list. It's not yet clear when the Mets expect him to return, as his timeline will likely depend on how quickly the inflammation subsides.