These will be played Wednesday, with finals set for Saturday at the Woollett Aquatics Center in Irvine.
No. 3 Los Osos vs. No. 2 Dana Hills, 2:30 p.m., Woollett Aquatic Center
Upland vs. No. 1 Harvard-Westlake, 4 p.m., Woollett Aquatic Center
No. 3 Crescenta Valley vs. No. 2 Temescal Canyon, 6 p.m., Mt. SAC, Walnut
No. 4 Bonita vs. No. 1 Redlands East Valley, 7:30 p.m., Mt. SAC
No. 3 Cajon vs. No. 2 Santa Ana Valley, 4 p.m., Costa Mesa HS
Katella vs No. 1 Garden Grove, 5:30 p.m., Costa Mesa HS