Davis was recalled from Triple-A Albuquerque by the Rockies on Friday.
Davis is taking the roster spot of Kyle Freeland (elbow). Freeland had been slated to start Saturday against the Mariners, but Peter Lambert is also an option to make that start. Davis has collected a 6.62 ERA and 21:10 K:BB over 17.2 innings covering four starts with Albuquerque this season.