Drohan is slated to start Sunday's game against the Rockies at Coors Field.
Drohan will be making his second straight turn through the rotation after most recently striking out five batters while yielding two earned runs on four hits and two walks across four innings in a start Monday against the Giants. Since he had previously been working out of the bullpen, Drohan was lifted after tossing 68 pitches in Monday's start, but he should have a little bit longer leash Sunday.