In Thursday's NCS girls tennis action… The #6 seeded girls tennis team defeated #3 San Ramon Valley HS 5-2 in the NCS quarterfinals.  The advance to the semifinals Saturday at Northgate HS. In Fridays action… The #3 seeded football team hosts #6 Newark Memorial HS in the NCS quarterfinals at 7:00. In Saturday's action… The #1 seeded boys water polo…