Mariners add a real prospect while shedding Luis Castillo’s salary
The New York Times • • sports
Key Points:
- The Chicago White Sox acquired right-handed pitcher Luis Castillo from the Seattle Mariners in exchange for right-hander Seranthony Domínguez, catcher/outfielder Boston Smith, and outfielder Nolan Jones.
- Seattle aimed to shed Castillo's remaining $30 million contract and improve their roster by adding prospects Boston Smith and Nolan Jones, along with reliever Domínguez to bolster their middle relief.
- Boston Smith, a versatile catcher/outfielder with strong offensive numbers but still developing defensively, has shown promise despite some struggles at Double-A, and is considered a mid-level prospect rather than a top-tier one.
- Nolan Jones is viewed as a platoon right fielder who may provide useful offense against right-handed pitching, addressing a current weakness in the Mariners' outfield.
- Castillo has struggled significantly in 2026, with his fastball and slider losing effectiveness, prompting Seattle to move on from him while the White Sox hope to improve his performance and fill rotation needs.
