Sousa (elbow) struck out one over a scoreless inning in a rehab appearance Sunday with Triple-A Sugar Land.
Sousa has been on the injured list since May 9 due to left elbow inflammation and will likely need to make multiple rehab appearances before the Astros are comfortable activating him. Before hitting the shelf, the southpaw reliever posted an 8.10 ERA and 2.40 WHIP in 3.1 innings over five appearances for Houston.