Updating a previous report, Miley left Sunday's game due to upper back cramps, Roch Kubatko of MASN Sports reports.
Miley appeared to tweak something during his warmups prior to the fifth inning, and it now appears to be regular case of cramping. The lefty will be sure to put an emphasis on hydration heading into his next start, which at this time, doesn't appear to be in grave jeopardy.