Urquidy was called up as expected for his big-league debut Tuesday against the Rockies, Brian McTaggart of MLB.com reports.
The 24-year-old will be thrown right into a very difficult first assignment in Denver, though he looks to have the skills to succeed at the big-league level. In 43.2 innings for Triple-A Round Rock, he recorded a strong 2.89 ERA, striking out an impressive 37.0 percent of opposing batters while walking just 5.8 percent. A decent showing at Coors Field could give him the chance to remain in the Astros' rotation, with Chandler Rome of the Houston Chronicle reporting that Urquidy is expected to get at least one more start Sunday against the Angels.