The Chicago White Sox have bolstered their pitching staff by acquiring right-hander Miguel Castro from the Houston Astros in exchange for international signing bonus pool money. Castro, 30, has had a solid season in Triple-A, boasting a 2.29 ERA and five saves across 17 relief appearances with Triple-A Sugar Land. In a related move, the White Sox designated infielder Jacob Amaya for assignment and sent Jared Shuster to Triple-A Charlotte to make room on the roster. Castro made his MLB debut with Toronto in 2015 and has played for several teams, including the Baltimore Orioles and Colorado Rockies.