Marquez, 21, has a 3.65 ERA and 13:3 K:BB in 12.1 innings since being promoted to Triple-A Albuquerque.
Marquez has only started two games at this level, but has not been overmatched despite the hitter-friendly confines of the California League. Of course, he will have to get used to that in the thin air of Colorado eventually. The Rockies are starved for pitching and Marquez has vaulted up the prospect rankings this season. Still, any MLB impact likely will not come until 2017 at the earliest.