The Diamondbacks placed right-hander Shelby Miller (right elbow inflammation) and left-hander T.J. McFarland (strained neck) on the 10-day disabled list and recalled right-handers Matt Koch and Silvino Bracho from Triple-A.
Miller left Wednesday's loss with elbow tightness and was sent back to Arizona for further evaluation. It was Miller's fourth start since returning from Tommy John surgery.
"He's going to get an MRI," manager Torey Lovullo said. "Holding out hope and always optimistic that it's going to be as positive as it can be. [Wednesday] night was in a rough spot, he felt bad, but nothing he did was his fault.''