NEW YORK -- To make room on the roster to activate left-hander Robbie Ray from the disabled list, the D-backs optioned right-hander Matt Koch to Triple-A Reno on Thursday morning.
Ray made his first start since July 28 in Thursday afternoon's finale against the Mets. Koch made just one appearance since being recalled from Triple-A Reno on Monday.
He faced three batters in Tuesday's 7-4 win, allowing two hits, a walk and three runs. Ray was on the 7-day concussion DL, after he was struck in the head by a Luke Voit line drive.
• D-backs manager Torey Lovullo said Thursday that shortstop Nick Ahmed (right hand) will play one more game in the Arizona Fall League before likely moving to Reno.