Highland Park 56, Deerfield 53: No. 18 Highland Park upset No. 14 Deerfield at the Buffalo Grove Class 4A regional.
Dahlia Cohen led Highland Park with 16 points.
North Chicago 70, Lakes 47: In the Class 3A regional at North Chicago, the host Warhawks cruised to victory.
Lake Forest postponed: The Class 4A regional game at Lake Forest between Warren and the host Scouts was postponed to Tuesday due to inclement weather.