The Hot Springs boys were a winner in the 8A regional tournament on Tuesday with a 45-26 win against Custer. The win moves them one win from an appearance in the SoDak 16.
The Bison will now face Rapid City Christian, an 84-31 winner over Lead-Deadwood, on Thursday night at Hart Ranch.
Belle Fourche was the other winner in 8A, 69-61 over Hill City and will play top seeded St. Thomas More.
Oelrichs ended their season in the 7B tournament with a 123-28 loss to White River.