St. Mary's swept Elkhorn Valley on Monday night on the Cardinals' home court to easily advance to the semifinals of the Niobrara Valley Conference.
The No. 2 Cardinals defeated the Falcons 25-17, 25-22, 25-8 and will now face No. 3 Chambers/Wheeler Central on 7:30 p.m. in Stuart on Tuesday.
The Renegades defeated Ewing 25-21, 25-20, 25-11 after the Tigers topped Niobrara/Verdigre, 25-7, 25-11, 25-19 in the first round of the NVC earlier in the night.