"With [Fiers] back there, it gives us length and it gives us a guy we feel can give us one good inning," manager Ron Roenicke said. "I've told him just be ready for anything. I told him, I think [his role] kind of depends on how he throws the first couple of times. If he comes out and is throwing strikes, yeah, I think he could [pitch] a little later."
Fiers surrendered six earned runs on nine hits in five innings of a loss to the D-backs on Saturday.
Adam McCalvy is a reporter for MLB.com. Read his blog, Brew Beat, and follow him on Twitter at @AdamMcCalvy. This story was not subject to the approval of Major League Baseball or its clubs.