Aberdeen Central def. Brandon Valley, 25-23, 18-25, 25-16, 24-26, 16-14
Aberdeen Roncalli def. Tiospa Zina Tribal, 25-13, 25-15, 25-17
Andes Central/Dakota Christian def. Tripp-Delmont/Armour, 19-25, 25-23, 25-17, 25-28
Avon def. Colome, 28-26, 25-7, 25-14
Baltic def. Irene-Wakonda, 25-9, 25-11, 25-13
Belle Fourche def. Newell, 25-11, 25-10, 25-15
Beresford def. Elk Point-Jefferson, 18-25, 15-25, 27-25, 25-22, 15-13
Bison def. Hettinger/Scranton, N.D., 25-19, 25-12, 18-25, 18-25, 15-9
Bon Homme def. Wagner, 25-23, 25-21, 23-25, 25-22
Castlewood def. Clark/Willow Lake, 25-18, 25-11, 25-20
Chester def. Parker, 19-25, 25-17, 25-19, 26-24
Cheyenne-Eagle Butte def. Crow Creek, 25-19, 25-13, 25-14
Dakota Valley def. West Central, 25-16, 25-17, 25-18
Dell Rapids def. Garretson, 25-21, 23-25, 25-16, 25-23
Deubrook def. Deuel, 25-18, 25-12, 25-16
Douglas def. Hill City, 17-25, 25-12, 25-21, 25-13
Elkton-Lake Benton def. Flandreau Indian, 25-6, 25-11, 25-5
Faulkton def. Highmore-Harrold, 25-20, 25-20, 25-23
Gregory def. Todd County, 25-10, 25-10, 25-19
Hanson def. Bridgewater-Emery, 26-24, 25-15, 25-13
Harding County def. Heart River, N.D., 25-19, 24-26, 25-23, 25-16
Harrisburg def. Sioux Falls Roosevelt, 21-25, 25-14, 22-25, 25-15, 15-8
Herreid/Selby Area def. McIntosh, 25-8, 25-12, 25-10
Hitchcock-Tulare def. Iroquois, 25-12, 25-11, 25-14
Hot Springs def. Bennett County, 20-25, 25-22, 25-22, 27-25
Huron def. Yankton, 25-17, 25-17, 25-19
Ipswich def. Potter County, 21-25, 19-25, 25-22, 25-19, 15-6
James Valley Christian def. DeSmet, 25-15, 25-19, 25-12
Kimball/White Lake def. Corsica/Stickney, 25-14, 25-11, 25-18
Lower Brule def. Sunshine Bible Academy, 23-25, 25-22, 25-16, 25-22
McCook Central/Montrose def. Flandreau, 25-18, 25-9, 25-15
Menno def. Viborg-Hurley, 25-13, 23-25, 27-25, 25-17
Milbank Area def. Sioux Valley, 25-21, 25-14, 23-25, 25-23
Miller def. Redfield/Doland, 25-16, 25-20, 25-16
Mitchell def. Brookings, 25-18, 25-15, 25-22
Platte-Geddes def. Burke/South Central, 25-11, 25-18, 22-25, 25-27, 15-6
Rapid City Central def. Sturgis Brown, 25-9, 25-12, 25-12
Rapid City Christian def. Jones County, 25-19, 25-7, 25-17
Rapid City Stevens def. Spearfish, 26-24, 25-21, 25-13
Sanborn Central/Woonsocket def. Wolsey-Wessington, 25-22, 25-15, 19-25, 25-21
Sioux Falls Lincoln def. Watertown, 25-20, 19-25, 26-24, 27-25
Sioux Falls O’Gorman def. Sioux Falls Washington, 14-25, 25-18, 25-16, 25-18
St. Thomas More def. Red Cloud, 25-20, 25-11, 25-11
Sully Buttes def. Eureka/Bowdle, 25-9, 25-10, 25-11
Timber Lake def. McLaughlin, 25-22, 25-22, 25-15
Tri-Valley def. Canton, 25-18, 25-15, 25-11
Vermillion def. Tea Area, 25-23, 25-13, 13-25, 25-20
Wall def. Lyman, 25-21, 7-25, 25-23, 23-25, 19-17
Warner def. Groton Area, 25-14, 25-21, 25-11
Waubay/Summit def. Florence/Henry, 21-25, 25-18, 25-21, 18-25, 16-14
AP-WF-09-21-16 0800GMT