Manager Bob Melvin told Susan Slusser of the San Francisco Chronicle that Gray is dealing with the "typical sore of dead-arm period."
Gray was shelled for six runs (five earned) on eight hits and one walk across five innings during Saturday's Cactus League outing, pushing his spring ERA to 5.68. In addition to Melvin's statement, Gray informed Slusser in a text that he was "a little tired out there," but he has time to build up his arm in advance of Opening Day on April 4 against the White Sox.