The Colorado Rockies have placed closer Jake McGee on the 15-day disabled list with knee inflammation and promoted left-handed pitcher Tyler Anderson from Triple-A Albuquerque to take his place, according to Thomas Harding.

Anderson was the Rockies first round pick in 2011 out of the University of Oregon. His first appearance will constitute his major-league debut. Anderson’s development has been slowed by a variety of injuries, including elbow pain left over from a stress fracture that cost him the entire 2015 season.

Anderson clocked in at 17 in Purple Row’s last PuRP voting, although he’s fallen off of other prospect lists, primarily due to injuries and subsequent lost time.

So far this season, Anderson has made six starts across three levels on his way to a 2-2 record, a 2.35 ERA and a 1.17 WHIP. In three starts with the Isotopes, he went 1-1 with a 2.12 ERA, most recently throwing six scoreless innings while allowing only two hits, walking two and striking out one.

Prior to his injury, Jake McGee had an 0-2 record and a 4.98 ERA in 21⅔ innings of work, saving 15 games as the team’s closer. Carlos Estevez and Jason Motte will likely get save opportunities in his stead.