A look at the top 25 high school boys' basketball teams in the Southland. Rk. School (W-L) Comment (last week’s ranking) 1. SIERRA CANYON (9-0) Trailblazers headed to Hawaii on Dec. 19. (1) 2. RANCHO CHRISTIAN ( 6-0) Plays at Mission Bay on Friday. (2) 3. ST. JOHN BOSCO (9-0) Hosts own tournament...