BOYS' VOLLEYBALL SOUTHERN CALIFORNIA REGIONAL CHAMPIONSHIP DIVISION I Semifinals, Thursday Mira Costa d. Loyola, 25-18, 25-17, 20-25, 23-25, 15-11 Corona del Mar d. Beckman, 25-20, 25-23, 23-25, 25-23 DIVISION II Semifinal, Wednesday Oak Park d. La Jolla, 25-20, 25-14, 25-16 Semifinal, Thursday...