The Chicago White Sox were the first Chicago team to get on the board first with a trade. The White Sox have acquired a starting pitcher two days before Monday's deadline, the team announced on Saturday night. What we know:ESPN's Jeff Passan first reported the White Sox are acquiring right-handed pitcher Luis Castillo from the Seattle Mariners. White Sox and Mariners Full Trade DetailsAccording to ESPNWhite Sox Acquire: Luis CastilloMariners Acquire: Reliever Seranthony Dominguez, outfielder Nolan Jones and catching prospect Boston SmithWhat we don't know:It's unclear how many moves the White Sox will make at the trade deadline, but this is a start. The White Sox are hoping they can unlock that again.