Second-seeded Oceanside used a 46-17 advantage of the middle two quarters to pull away from No. 10 Lake Region in a Class B South quarterfinal at the Portland Expo.

Renee Ripley and Addie Poland each hit a pair of 3-pointers during a 25-8 surge in the third quarter. Ripley finished with 21 points and Poland, a slender senior guard, scored 17, to go with a team-high eight rebounds.

Freshman Olivia Breen led Oceanside in scoring with 22 points, 11 in the fourth quarter.

Oceanside (18-1) will play No. 3 York (13-6) at 5 p.m. Wednesday at the Expo

Lake Region (8-12) held an early behind the play of Helena Sheldrick (12 points) until Abby Stackpole (12 points) hit a 3-pointer for the Mariners. At the half, Oceanside led 29-16.

Oceanside played nearly the entire game without junior guard Grace Mackie, a starter who injured her left arm on a drive to the basket.