Nathan Pearson: Everything you need to know

The Astros reinstated Pearson (elbow) from the 15-day injured list Tuesday. Pearson is returning from a rehab assignment after he dealt with soreness in his right elbow that stemmed from an offseason cleanup. He will likely be used primarily as a reliever for the Astros after doing so during his rehab assignment. In a corresponding move, the Astros placed Lance McCullers on the 15-day injured list due to right shoulder inflammation.

Pearson (elbow) could be activated from the 15-day injured list during Houston's series against Minnesota, Matt Kawahara of the Houston Chronicle reports. Pearson has been working as a reliever during his rehab assignment, and the expectation is that he'll be back with the major-league club soon to provide the bullpen a boost. The right-hander wasn't activated in time for Monday's series opener, but he could be back in action at some point over the next two days, per skipper Joe Espada.

Pearson (elbow) is being built up as a reliever on his rehab assignment, Matt Kawahara of the Houston Chronicle reports. When Pearson was signed by the Astros over the offseason, the intention was to stretch him out to be an option for the rotation. However, the club has reversed course and will bring Pearson back as a member of its bullpen. Pearson -- who has pitched predominately as a reliever in the majors -- has posted a 9.53 ERA and 8:10 K:BB over 5.2 frames in his four rehab appearances.