Maine West captured its first regional title since 1999 in a field that featured six CSL teams Saturday.
New Trier won the Glenbrook South Regional that also included the host school and Glenbrook North.
Waukegan hammered Loyola 79-56 Saturday at the War on the Shore for its seventh win in a row.
Evanston fell to St. Patrick 58-56 Saturday in the war on the Shore at Loyola.
New Trier lost for the second time in two days Saturday, falling to St. Ignatius 49-42 at the War on the Shore.
The Maine South boys basketball team beat Libertyville 50-47 Saturday at the Bradley Center in Milwaukee.
The Glenbrook South girls basketball team defeated Lincoln Park 69-37 Saturday.