HOUSTON — Luis Castillo has been with the Chicago White Sox for a little more than a month. In three of his five August outings after being acquired in a trade from the Seattle Mariners, the right-hander allowed at least four runs. His September didn’t get off to any better start. Castillo allowed six runs in four innings Thursday in a 6-2 loss to the Houston Astros in front of 24,155 at …
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