In a surprise trade Saturday night, the White Sox acquired RHP Luis Castillo from the Seattle Mariners in hopes of fixing the three-time All-Star who has suffered through the worst season of his career. Among those headed to Seattle in the deal was RHP Seranthony Dominguez, who the White Sox signed to a two-year deal in the offseason to be their closer. Castillo and Brazoban have yet to make their White Sox debuts, but both should happen this week. As a White Sox fan, I sure am glad he’s not our problem anymore. This White Sox roster is far from perfect, but I feel confident saying they upgraded in the bullpen, and seeing Seranthony Dominguez struggle with another team quickly only reinforces the reality we already knew.