Nate Shockey scored 34 points to lead the Dukes past Downers Grove North 59-44.
Braden Huff scored 26 points, but Oak Park-River Forest edged the Hilltoppers 64-62. Caden Pierce and Diallo Phillips each added 14.
Josh Harris scored 14 points and Ben VanderWal added 12 for the Trojans in a 57-41 win over Elmwood Park. Jack Baldridge added nine and Zach Orange eight.
Taylor Huff scored 22 points and Maggie Stutelberg added nine for the Hilltoppers in a 52-38 win over Oak Park-River Forest.
Downers Grove North
The Lady Trojans beat York 37-29.