White Sox Land Castillo From Mariners in 3-Player Deal
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- Chicago White Sox acquired right-handed pitcher Luis Castillo from the Seattle Mariners for reliever Seranthony Dominguez, outfielder Nolan Jones, and catching prospect Boston Smith, the team announced Saturday.
- Luis Castillo, 33, is 3-9 with a 5.06 ERA in 17 starts this season — the worst year of his 10-year career, which carries a 3.65 career ERA — and he is in year four of a five-year, $108 million deal with a vesting option for 2028.
- Seranthony Dominguez, 31, was 4-3 with a 4.10 ERA and 12 saves over 42 appearances for Chicago; his salary offsets the large contract the team is absorbing in the Castillo deal.
- Nolan Jones spent the entire season at Triple-A, while Boston Smith — Chicago's 15th-ranked prospect — was hitting .306 at Double-A in 22 games before being dealt.
- Castillo brings postseason experience that none of Chicago's other starters possess, and is expected to slot into the middle of a rotation that has recently featured Anthony Kay, Erick Fedde, and rookie Noah Schultz.
- The White Sox are still pursuing additional talent before Monday's trade deadline, with another starter or reliever and catching depth — needed after starter Kyle Teel went out for most of the remaining regular season — as stated priorities.
Why it matters: Chicago is giving up a top-15 catching prospect and a productive reliever for a 33-year-old starter in the worst season of his career, betting his 3.65 career ERA and playoff resume translate to the South Side. With Teel out and their top catching prospect gone, the Sox likely need another move before Monday's deadline to backfill the position.
