Class AA Boys Basketball 

No. 1 Sioux Falls Washington defeated No. 9 Aberdeen Central 56-53

No. 4 O’Gorman defeated No. 5 Harrisburg 58-39

No. 2 Yankton defeated No. 7 Mitchell 50-46

No. 3 Sioux Falls Roosevelt defeated Brandon Valley 64-47

Class A

No. 8 defeated No. 1 Vermillion 53-52

No. 4 Sioux Falls Christian defeated No. 5 St. Thomas More 58-47

No. 2 Dakota Valley defeated No. 7 Winner 65-58

No. 3 Sioux Valley defeated No. 6 Chamberlain 53-44

Class B

No. 1 De Smet defeated No. 8 Lower Brule 80-53

No. 4 Viborg-Hurley defeated No. 5 Lyman 53-45

No. 7 Aberdeen Christian defeats No. 2 Canistota 55-49

No. 6 Dell Rapids St. Mary defeated No. 3 White River 75-69