The Seattle Mariners made a significant roster move ahead of the trade deadline, sending right-hander Luis Castillo to the Chicago White Sox in exchange for right-hander Seranthony Domínguez, outfielder Nolan Jones, catching prospect Boston Smith, and cash considerations, according to a Saturday night announcement.
Castillo, 30, was a key part of the Mariners' rotation earlier in the season but struggled with consistency and injury issues. His trade marks a shift in strategy as the team looks to bolster its depth in different areas. The White Sox, meanwhile, added a proven starter to their pitching staff.
Domínguez, 25, is a right-handed pitcher with potential, while Jones and Smith offer versatility and future upside. The Mariners’ decision reflects a broader effort to reshape their roster for the second half of the season. The deal was confirmed by the team’s official statement.
