At Belton, Qiana Canete recorded 22 kills and four blocks and the 15th-ranked Lady Dawgs won their 20th straight match.
Bryaunea Hall added 12 kills and three blocks for Cove (33-6, 13-0 8-5A), which clinched the district championship on Tuesday.
Brittney Johnson led the Lady Dawgs with 23 digs. Jessica Vick had 22. Mikayla Blount finished with 23 assists, and Arielle Garcia added 22.