Red Sox manager Alex Cora said that Anthony (oblique) will undergo an MRI on Wednesday, Christopher Smith of MassLive.com reports.
Anthony was spotted grabbing at his lower back on a swinging strike in the bottom of the fourth inning of Tuesday's 11-7 win over the Guardians, and he didn't leave the dugout to take the field for the top of the fifth. The Red Sox later relayed that Anthony's departure was the result of left oblique tightness, an injury that could result in him making a trip to the injured list. The team will wait for the results of his MRI to come in before determining Anthony's next steps, but at the very least, expect the star rookie to be out of the lineup for Wednesday's series finale.