Montgomery is listed as the Diamondbacks' probable starting pitcher for Sunday's game in Milwaukee, Jesse Friedman of GoPHNX.com reports.
Montgomery picked up his first start since Aug. 21 on Tuesday, joining the rotation as a replacement for the injured Ryne Nelson (shoulder). Though he had been pitching out of the bullpen for nearly a month, Montgomery still took on close to a typical starter's workload (4.2 innings and 79 pitches) while giving up three earned runs on six hits and two walks. Montgomery will likely shift back to the bullpen during the playoffs if the Diamondbacks should clinch a postseason spot, but he'll pick up at least one more start while Nelson is on the shelf.