The Class B boys basketball tournament is March 20-22 at Wachs Arena in Aberdeen. 

The first-round pairings are listed below:

No. 1 Castlewood vs. No. 8 Lyman, 12 p.m., CT

No. 4 Wessington Springs vs. No. 5 Wall, 1:45 p.m., CT

No. 2 Dell Rapids St. Mary vs. No. 7 Aberdeen Christian, 6 p.m., CT

No. 3 Viborg-Hurley vs. No. 6 Freeman, 7:45 p.m., CT