Gilroy High will play Presentation in the CCS quarterfinals at 11:15 a.m. on Saturday at Lynbrook High School.
The third-seeded Mustangs (9-3-2) received a bye into the second round. Presentation, the No. 11-seed, beat No. 6 Cupertino 2-1 on Thursday to advance.
The two teams played twice during the regular season in Blossom Valley Athletic League Mount Hamilton Division action. Gilroy won both.