Per the LA Times:
SOUTHERN CALIFORNIA REGIONAL
OPEN DIVISION
Regional quarterfinals, Wednesday
Corona Centennial 62, San Marcos Mission Hills 51
Sierra Canyon 94, San Diego Cathedral 50
La Jolla Country Day 53, Mater Dei 45
Regional semifinals, Saturday, 6 p.m.
#4 Corona Centennial at #1 Etiwanda
#3 Sierra Canyon at #2 La Jolla Country Day
NORTHERN CALIFORNIA REGIONAL
OPEN DIVISION
Regional quarterfinals, Wednesday
El Dorado Hills Oak Ridge 51, Los Altos Hills Pinewood 48
Fresno Clovis West 51, Folsom 48
San Jose Mitty 74, Danville San Ramon Valley 36
Regional semifinals, Saturday, 6 p.m.
#5 El Dorado Hills Oak Ridge at #1 Concord Carondelet
#3 Fresno Clovis West at #2 San Jose Mitty
SOUTHERN CALIFORNIA REGIONAL
OPEN DIVISION
Regional quarterfinals, Wednesday
Corona Centennial 62, San Marcos Mission Hills 51
Sierra Canyon 94, San Diego Cathedral 50
La Jolla Country Day 53, Mater Dei 45
Regional semifinals, Saturday, 6 p.m.
#4 Corona Centennial at #1 Etiwanda
#3 Sierra Canyon at #2 La Jolla Country Day
NORTHERN CALIFORNIA REGIONAL
OPEN DIVISION
Regional quarterfinals, Wednesday
El Dorado Hills Oak Ridge 51, Los Altos Hills Pinewood 48
Fresno Clovis West 51, Folsom 48
San Jose Mitty 74, Danville San Ramon Valley 36
Regional semifinals, Saturday, 6 p.m.
#5 El Dorado Hills Oak Ridge at #1 Concord Carondelet
#3 Fresno Clovis West at #2 San Jose Mitty