White Sox remain confident in Luis Castillo and Munetaka Murakami despite ugly road trip performance

HOUSTON – If there was a theme of Luis Castillo’s previous three starts, other than ineffectiveness, it was struggling to establish his four-seam fastball at the top of the zone. In outings against the Cubs and Twins, Castillo gave up first-inning homers on fastballs that stayed hittably thigh-high. By the time he found the feel on locating heaters elevated enough to set up the rest of his arsenal, the opportunity for a respectable line score was already gone. “There’s some delivery stuff that…