St. Joseph overcame a fourth quarrter run from Modesto Christian to post a 67-62 win.
It was a big week for Pinewood and Riordan with more big games on tap for Monday.
De La Salle, Dougherty Valley and San Ramon Valley form the top tier with Dublin and California shortly behind them.
Vanden has been a consistent winner in the Sac-Joaquin Section under co-head coaches Allison and Jake Johnson.
St. Ignatius led almost the whole game in beating Mitty 57-45 to remain undefeated in the WCAL.
