Rusin is an option to start Saturday's game against the Dodgers, Nick Groke of The Denver Post reports.
The southpaw made seven starts last season, and with Antonio Senzatela rendered unavailable until Sunday due to his pitching schedule, Rusin makes for an easy in-house option for a spot start. Prospect Jeff Hoffman is another candidate to make an appearance, although someone would need to be demoted in order to make room for the right-hander on the roster. Nothing official has been announced as of now, but Rusin's 3.00 ERA and 17:4 K:BB he's posted in 18 frames this season certainly works in his favor.