Mariners add a real prospect while shedding Luis Castillo's salary

Perhaps the White Sox may see something they can adjust to get Castillo above replacement level for 2027.

ST. PETERSBURG, Fla. — The White Sox are going for it. To what degree, we'll see. On Saturday night, they made their first splash before the trade deadline, acquiring Mariners right-handed starter Luis Castillo for right-handed reliever Seranthony Dominguez and prospects Nolan Jones and Boston Smith. The Sox also are p