Aberdeen Central def. Brookings, 25-17, 25-20, 25-22

Alcester-Hudson def. Freeman Academy/Marion, 25-3, 25-9, 25-7

Arlington def. Oldham-Ramona/Rutland, 25-13, 25-4, 25-10

Brandon Valley def. Yankton, 25-11, 25-21, 25-15

Castlewood def. De Smet, 25-10, 25-13, 25-11

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Chamberlain def. McLaughlin, 25-20, 25-8, 25-19

Chester Area def. Sioux Valley, 25-22, 25-19, 25-19

Colome def. Jones County, 25-12, 25-19, 25-9

Corsica-Stickney def. Avon, 28-26, 25-18, 26-24

Elkton-Lake Benton def. Dell Rapids St. Mary, 25-20, 25-14, 25-21

Estelline/Hendricks def. Lake Preston, 25-14, 25-11, 25-10

Faulkton Area def. Aberdeen Roncalli, 25-18, 25-20, 21-25, 25-15

Freeman def. Hanson, 25-19, 25-18, 16-25, 25-9

Garretson def. West Central, 25-19, 25-22, 17-25, 25-15

Gayville-Volin def. Burke, 22-25, 27-25, 23-25, 25-18, 15-12

Harrisburg def. Mitchell, 25-15, 25-15, 25-16

Herreid/Selby Area def. Sully Buttes, 25-11, 25-12, 25-20

Highmore-Harrold def. Lyman, 25-5, 25-14, 25-14

Hill City def. Custer, 25-14, 25-13, 25-11

Hitchcock-Tulare def. Sanborn Central/Woonsocket, 25-17, 25-16, 25-15

Huron def. Watertown, 25-21, 25-23, 25-20

Kadoka Area def. Stanley County, 23-25, 25-16, 25-22, 25-6

Kadoka Area def. New Underwood, 25-10, 25-18, 25-11

Langford Area def. Britton-Hecla, 25-18, 25-15, 25-17

Linton/Hazelton-Moffit-Braddock, N.D., def. Mobridge-Pollock, 25-17, 25-11, 25-6

Mount Vernon/Plankinton def. Tri-Valley, 25-18, 21-25, 17-25, 25-19, 15-8

New Underwood def. Stanley County, 25-13, 25-8, 25-16

Northwestern def. Groton Area, 25-10, 25-5, 25-9

Parker def. Flandreau, 25-11, 25-23, 25-16

Pierre def. Sturgis, 25-22, 25-13, 25-20

Platte-Geddes def. Kimball/White Lake, 25-22, 19-25, 23-25, 25-19, 16-14

Sioux Falls O’Gorman def. Sioux Falls Roosevelt, 25-14, 25-18, 25-17

Sioux Falls Washington def. Sioux Falls Lincoln, 25-22, 25-15, 25-13

St. Thomas More def. Belle Fourche, 25-19, 25-13, 25-15

White River def. Lower Brule, 25-9, 25-15, 25-16

Winner def. Wagner, 27-25, 25-15, 25-16