South Sioux City and Lawton-Bronson each won interstate showdowns on the hardwood Thursday night.
The second-ranked Lady Cardinals took down No. 11 Sergeant Bluff-Luton 71-59. South Sioux City (19-1) hosts Omaha Gross on Friday.
No. 13 Lawton-Bronson protected their home court, beating Elk Point-Jefferson 49-46. The Eagles (17-4) begin regional play on February 16.