Avon def. Andes Central/Dakota Christian, 25-14, 25-10, 25-12

Bridgewater-Emery def. Wessington Springs, 25-3, 25-13, 25-10

Britton-Hecla def. Tiospa Zina, 25-12, 25-12, 25-12

Corsica-Stickney def. Centerville, 25-15, 25-18, 25-19

Dakota Valley def. Elk Point-Jefferson, 22-25, 25-17, 25-12, 25-11

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Dell Rapids St. Mary def. Mitchell Christian, 25-11, 25-5, 25-19

Freeman def. Howard, 25-21, 25-17, 25-22

Gregory def. Lyman, 25-18, 25-17, 25-19

Hamlin def. Flandreau, 25-20, 26-24, 25-22

Huron def. Aberdeen Central, 25-22, 25-16, 25-21

Ipswich def. Waubay/Summit, 25-23, 25-11, 25-21

Kimball/White Lake def. Burke, 25-17, 25-20, 26-24

Madison def. West Central, 25-16, 25-19, 25-17

Menno def. Freeman Academy/Marion, 25-14, 25-13, 25-14

Milbank def. Sisseton, 25-7, 25-19, 25-15

Miller def. Sully Buttes, 25-11, 25-19, 25-19

Mount Vernon/Plankinton def. Bon Homme, 25-14, 25-18, 25-16

Northwestern def. Langford, 25-11, 25-13, 25-13

Parker def. McCook Central/Montrose, 25-23, 25-21, 15-25, 14-25, 15-13

Parkston def. Hanson, 25-11, 25-23, 25-13

Platte-Geddes def. Colome, 25-7, 25-16, 25-20

Rapid City Christian def. Sturgis 3-0, set scores not immediately available

Sanborn Central/Woonsocket def. Ethan, 25-18, 21-25, 25-20, 25-19

Scotland def. Canistota, 25-19, 15-25, 18-25, 25-13, 15-13

Sioux Falls Lincoln def. Sioux Falls Roosevelt, 25-23, 25-20, 24-26, 16-25, 15-13

Sioux Valley def. Clark/Willow Lake, 25-16, 25-14, 25-18

Wagner def. Chamberlain, 25-10, 25-16, 25-12

Warner def. Leola/Frederick, 25-10, 25-17, 25-10

Webster def. Deuel, 22-25, 25-17, 27-25, 15-25, 15-6

Winner def. Valentine (Neb.), 25-20, 25-14 and 25-23

Yankton def. Beresford, 25-13, 25-14, 25-16