Billingsley has been bumped back to start Saturday night in Colorado, while rookie right-hander Carlos Monasterios will get the nod for Thursday's series finale at Miller Park.
"He probably could've pitched Thursday," Torre said of Billingsley. "But with the fact that we needed a fifth starter Saturday, we figured we'd rather give him the extra couple days."
Covering first base on a grounder on Saturday in the second inning, Billingsley said he "kind of tweaked" his calf, but was unaffected by the injury.
According to Torre, the calf bothers Billingsley more off the mound than on it.
"It may not make a difference," Torre said of the extra time off. "But if it's going to be a plus for him, then so be it. As long as we needed the fifth starter one place or the other, we just decided to give him the extra days off."