Thursday was day one of the South Dakota high school basketball tournaments for boys and Class AA girls.

BOYS BASKETBALL=

Class AA=

Quarterfinal=

Harrisburg 64, Sioux Falls Washington 47

RC Central 66, Douglas 54

Rapid City Stevens 53, Sioux Falls O’Gorman 40

Yankton 59, Sioux Falls Lincoln 57

Class A=

Quarterfinal=

Madison 82, Pine Ridge 59

Sioux Falls Christian 80, Red Cloud 46

Sioux Valley 75, Dakota Valley 55

Tea Area 76, Crow Creek 63

Class B=

Quarterfinal=

Bridgewater-Emery 63, Lower Brule 53

Clark/Willow Lake 57, Canistota 47

Sully Buttes 62, Timber Lake 53

White River 52, Langford 43

GIRLS BASKETBALL=

Class AA=

Quarterfinal=

Aberdeen Central 54, RC Central 42

Brandon Valley 50, Sioux Falls O’Gorman 41

Harrisburg 45, Rapid City Stevens 34

Sioux Falls Lincoln 55, Sioux Falls Washington 43