Lorenzen (elbow) could be activated off of the disabled list on Wednesday, Mark Sheldon of MLB.com reports.
Lorenzen first sprained his UCL in mid-March. The 24-year-old started 21 times in his short majors career, posting a 5.40 ERA and 1.66 WHIP in a total of 113.1 innings pitched. He will return as a reliever instead of a starter.