The Diamondbacks optioned Drake to Triple-A Reno on Saturday.
Drake was lit up for five earned runs in four innings during his spot start Friday against the Giants, and the Diamondbacks will now send him back to the minors in order to open up a spot on the active roster for right-hander Derek Law, who was called up from Reno. Drake now carries a 6.53 ERA and 1.50 WHIP through 20.2 frames with Arizona this season but could still be tapped for another start if the big club's rotation depth is tested further during the final month of the campaign.