Zack Cozart, Joey Votto and Marlon Byrd were the first three hitters in the Cincinnati order against Collmenter.
Cozart led off the seven-inning game with a home run to left, but that would be the only run Collmenter would allow in his three innings of work.
"Command wasn't as crisp as my first outing," Collmenter said.
The outing was beneficial, however, as Collmenter threw pitches in counts he normally would not to gauge hitter's reactions and he was able to increase his pitch count from his first outing.
Steve Gilbert is a reporter for MLB.com. Read his blog, Inside the D-backs, and follow him on Twitter @SteveGilbertMLB. This story was not subject to the approval of Major League Baseball or its clubs.