The top-seeded Black Bears (18-2) used a combination of outside shooting and offensive rebounding to take control against the fifth-seeded Lakers (9-11) in a Class B South semifinal at the Portland Expo.

Maranacook will play for its first Class B South title Friday against No. 6 Wells at Cross Insurance Arena. Maranacook won Class B state championships playing out of Eastern Class B (now Class B North) in 2006 and 2008.

Tim Worster scored 20 points, aided by three 3-pointers in the first four minutes of the second quarter. Then Casey Cormier worked inside for six points. Cash McClure suffered a bloody nose in the second quarter and had to seek medical attention in the athletic trainer’s room, but he returned and got two inside baskets later in the second as Maranacook built a 37-18 lead.

Playing the rest of the game with gauze stuffed in both nostrils, McClure finished with 19 points.

Skyler Boucher added 10 points and led a team defensive effort that held Lake Region’s 6-6 Evan Willey scoreless in the first half. Willey finished with 11 points. Isaac McDonald paced Lake Region with 14 points off the bench.