Cross-county rivals Castle and Boonville will square off Tuesday night on the Pioneers' home floor. It's the season opener for the Knights and game number two for the Pioneers, who lost to Tecumseh 47-42 on Saturday night.
Castle is coming off a 14-6 season last year.
Tip-off time is 7:30.
Castle opens SIAC play at home against North Friday night while Boonville plays at Memorial.