PITTSBURGH >> Nicholas Castellanos is racking up hits at a remarkable rate, and the Detroit Tigers needed them in a slugfest Wednesday night.Castellanos had four hits and a key home run, and the Tigers used 20 hits to outslug the Pittsburgh Pirates 13-10 in the opener of a doubleheader.The teams combined for 34 hits, including four from Detroit slugger Miguel Cabrera and three from Jeimer Candelario.