Mariners send Luis Castillo to White Sox in 4-player trade
Seattle deals right-hander Luis Castillo to Chicago in a multi-player exchange, reshaping both rosters.
The Seattle Mariners have traded right-handed pitcher Luis Castillo to the Chicago White Sox as part of a four-player deal. The trade is official per MLB.com reporting, giving it maximum confidence as a completed transaction. Castillo's move to Chicago affects rotation planning for both clubs. Fantasy and betting contexts should update roster and pitching staff assumptions for both SEA and CWS immediately.
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