Red Sox interested in Luis Castillo, Jack Flaherty

The Red Sox are actively pursuing starting pitching options, with Luis Castillo of the Mariners and free agent Jack Flaherty on their radar. Boston is open to trading top prospect Triston Casas for arms, with Castillo being a potential trade target given his durability and track record. Flaherty, who had a strong 2024 season, is also of interest to the Red Sox as they seek to bolster their rotation amidst a competitive market for pitching.

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