Pleasanton Foothill visits Concord De La Salle on Friday and Pittsburg hosts Danville San Ramon Valley on Saturday.
Moraga Campolindo visits Santa Rosa Cardinal Newman on one side while Concord Clayton Valley welcomes Walnut Creek Las Lomas on the other.
Alameda Encinal hosts Kentfield Marin Catholic on Friday while Orinda Miramonte travels to defending champ Novato on Saturday.
Richmond Salesian will face Napa Justin-Siena on Friday at Alhambra HS in Martinez for the D-IV crown.
Petaluma St. Vincent will take on Oakland St. Elizabeth on Friday night at Santa Rosa HS for the D-V title.