Second-seeded Cheverus opened a 32-2 advantage after one quarter on its way to an 82-39 win over Bangor in a Class AA North boys’ basketball quarterfinal Friday night in Portland.

Gio St. Onge and Nicola Plalum each scored eight points and Rocco DePatsy had seven during the first-quarter surge. The Stags raced to a quick 12-0 lead, then answered a Bangor basket with 22 straight points.

St. Onge finished with 18 points, DePatsy had 13, and Plalum and Leo McNabb also reached double figured with 11 apiece.

Cheverus advances to play defending regional champion Portland, the No. 3 seed, in the semifinals Thursday at Cross Insurance Arena.