Arizona Diamondbacks starter Matt Koch was demoted to Triple-A Reno on Wednesday night. Koch will return to the Aces after two months of filling the rotation spot left by the injured Robbie Ray. Koch was inconsistent in his time with Arizona, finishing with a 4.40 ERA and 38 strikeouts across 71 2/3 innings. His demotion means that Shelby Miller will likely make his return from the DL on Monday.