In his first South Point Senior Shootout last year, Dino Castillo won the Turbo Challenge and finished second in the Haynes Bowling Supply Challenge. Castillo was back at it on Wednesday in his second SPSS, edging Craig Harrington 192-190 in a wild title match to win the Roto Grip Challenge at South Point Bowling Plaza, according to results posted here. Castillo split for opens in the seventh and 10th and Harrington split for opens in the eighth and ninth. The Roto Grip Challenge was contested...