Centerville 68, Irene-Wakonda 51

Freeman 66, Gayville-Volin 42

Parkston 57, Tripp-Delmont/Armour 39

Viborg-Hurley 59, Avon 39

Region 5B — Quarterfinals

Andes Central/Dakota Christian 68, Marty 67

Corsica-Stickney 42, Gregory 41

Lower Brule 68, Burke 50

Lyman 65, Mitchell Christian 29

Region 6B — Quarterfinals

Faulkton Area 67, North Central 44

Gettysburg 74, Herreid/Selby Area 48

Ipswich 57, Wakpala 39

Sully Buttes 68, Highmore-Harrold 34

Region 7B — Quarterfinals

Kadoka Area 69, Bennett County 58

New Underwood 83, Crazy Horse 46

Wall 87, Philip 54

White River 68, Jones County 58

Region 8B — Quarterfinals

Dupree 99, Takini 21

Faith 61, McLaughlin 53

Harding County 45, Lemmon 39

Timber Lake 49, Bison 21

Region 1A — Quarterfinals

Britton-Hecla 59, Aberdeen Roncalli 54

Milbank 48, Sisseton 45

Webster Area 85, Redfield 64

Region 2A — Quarterfinals

Elkton-Lake Benton 67, Great Plains Lutheran 29

Hamlin 73, Florence/Henry 33

Sioux Valley 59, Deuel 44

Region 3A — Quarterfinals

Baltic 51, Tri-Valley 45

Dell Rapids 62, Madison 61

Flandreau 71, Garretson 66

Region 4A — Quarterfinals

Dakota Valley 66, Beresford 57

Lennox 78, Canton 40

Vermillion 74, Elk Point-Jefferson 37

Region 5A — Quarterfinals

Mount Vernon/Plankinton 55, Hanson 48

Parker/Marion 68, Scotland/Menno 53

Wagner 77, Bon Homme 42

Region 6A — Quarterfinals

Chamberlain 58, Miller 49

Cheyenne-Eagle Butte 86, Crow Creek 23

Mobridge-Pollock 63, Platte-Geddes 56

Region 7A — Quarterfinals

Little Wound 68, Todd County 53

Pine Ridge 108, Lakota Tech 30.  Marvin Richard III set an all time single game scoring record as he scored 73 points in the win.

Winner 46, St. Francis 27

Region 8A — Quarterfinals

Hill City 60, Hot Springs 20

Lead-Deadwood 69, Custer 51

Rapid City Christian 56, Belle Fourche 28