Granite Bay and Whitney will play host to quaterfinal matches Tuesday in the first CIF Northern California Regionals boys volleyball playoffs.
Sac-Joaquin Section champion and No. 4 seed Granite Bay (22-11) will play No. 5 Amador Valley of Pleasanton (27-8), the North Coast Section runners-up, at 7 p.m. in the Division I playoffs.
Section champion and No. 2 seed Whitney (30-3) will play No. 7 Washington of Fremont (17-18), the NCS runners-up, at 7 p.m. in the D-II playoffs.
Sac-Joaquin Section D-I runner-up and No. 7 Nevada Union (19-7) plays at NCS champion and No. 2 Deer Valley of Antioch (40-1). D-II section runner-up and No. 6 Vista del Lago (24-10) plays against Central Coast Section champion and No. 6 Mt. Madonna (30-8) in Watsonville.
Semifinals will be played on Thursday at home sites, with the finals on Saturday at Dublin High School in Dublin.
Granite Bay won its fourth D-I section title in the five years the section has sanctioned the sport in beating Nevada Union 3-1 on Thursday at Monterey Trail High School.
Whitney beat Vista del Lago in D-II for its first boys section volleyball title. Vista del Lago had won the previous two.