Guillorme started at second base and went 0-for-2 with two walks and a stolen base in Tuesday's 8-2 loss to the Rockies.
The steal was Guillorme's third in 18 games since joining the Diamondbacks. Ketel Marte was given the day off, clearing the way for Guillorme to get a start. Now that Marte is back from an ankle injury and regularly playing the field, Guillorme has receded into a backup role. Tuesday's start was his first in seven contests.