Marquez is a candidate to take over the spot in the Rockies rotation vacated after Jon Gray (toe) was placed on the disabled list, Nick Groke of The Denver Post reports.
The 22-year-old cracked the Opening Day roster as a long reliever, but with Chris Rusin occupying that role, there was no room at the inn for Marquez, who was subsequently shipped back to Triple-A. Now, following one minor-league relief appearance in which he fanned a pair of hitters in as many innings, Marquez could be called upon to fill Gray's spot in the rotation. Granted, the Rockies don't need a fifth starter until April 28, so Marquez, Jeff Hoffman or Harrison Musgrave (the other two leading candidates for a promotion) may not be called up until the end of the month anyway. Marquez's success last season could vault him into higher regard for the role.