Arenado is out of the lineup for Thursday's matchup with Atlanta, Patrick Saunders of the Denver Post reports.
Arenado will get his first maintenance day since June 12 as Cristhian Adames takes his place at third and bats eighth. Arenado has cooled off in July, going 15-for-62 (.242) with just six runs and RBI apiece this month. He'll likely be back out there Friday as the Rockies face Jon Gray and the Braves.