Diamondbacks option struggling Shelby Miller to Reno

FILE - In this May 24, 2016, file photo, Arizona Diamondbacks starting pitcher Shelby Miller sits in the dugout during the team's baseball game against the Pittsburgh Pirates in Pittsburgh. The Diamondbacks have optioned struggling pitcher Miller to the Triple-A Reno Aces of the Pacific Coast League. The Diamondbacks said Thursday, July 14, that a corresponding move will be made Friday before the team's home game against the Los Angeles Dodgers. (AP Photo/Gene J. Puskar, File)
Gene J. Puskar/AP

PHOENIX (AP) The Arizona Diamondbacks have optioned struggling pitcher Shelby Miller to the Triple-A Reno Aces of the Pacific Coast League.

The Diamondbacks said Thursday that a corresponding move will be made Friday before the team's home game against the Los Angeles Dodgers.

Miller has been a major disappointment after the Diamondbacks got him in an offseason trade with Atlanta for outfielder Ender Inciarte and two of their top prospects.

Miller is 2-9 with a 7.14 ERA. He has been on the disabled list and worked in the minors to find his form. After some progress, Miller had another rough night last week in a 13-6 home loss to San Diego. After blanking the Padres for three innings, he gave up five runs in the fourth when Arizona had a 4-0 lead.