Behind 26 points from Trevor Brown and 19 from Patrick McKenney, fourth-seeded Medomak Valley rolled to a 60-47 win over fifth-seeded Lisbon in a Class B South boys’ basketball quarterfinal Friday night at the Portland Expo.

Medomak Valley (16-4) advances to a semifinal at 7:45 p.m. Tuesday at the Expo against No. 9 Maranacook or No. 1 Spruce Mountain.

The Panthers used their superior quickness and strength to gain control early, racing to an 18-5 lead after a quarter. Lisbon (15-4) got no closer than 10 the rest of the way, with the lead peaking at 49-23 late in the third quarter.

Medomak had 15 steals, compared to four for Lisbon, and outrebounded the Greyhounds, 31-21.

Lisbon was led by Mason Booker with 20 points. Charlie Doyle and Caden Boone each scored 11.

MARANACOOK 38, SPRUCE MOUNTAIN 31: Chris Reid scored 18 points, and the ninth-seeded Black Bears (10-8) used a 16-6 advantage in the fourth quarter to upset the No. 1 Phoenix (17-1) in a Class B South quarterfinal.

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Lucas Towers led Spruce Mountain with nine points. High-scoring freshman point guard Jace Bessey was held to five points.

GIRLS’ BASKETBALL

GARDINER 50, MT. BLUE 29: Lizzy Gruber scored her team’s first 14 points and finished with 23 as the second-seeded Tigers (17-2) beat the seventh-seeded Cougars (8-12) in a Class A North quarterfinal at the Augusta Civic Center.

Gruber also grabbed 19 rebounds, helping Gardiner advance to a semifinal against No. 3 Lawrence.

Gruber accounted for most of the offense in the first half, scoring 18 points as Gardiner opened a 25-8 advantage. The Tigers ended the half with an 11-0 run, sparked by an Emily Grady 3-pointer.

Eva Stevens led Mt. Blue with 10 points.

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LAWRENCE 43, MESSALONSKEE 38: Hope Bouchard scored 16 points, and the third-seeded Bulldogs (16-3) snapped out of a shooting slump with seven 3-pointers in a Class A North quarterfinal win over the No. 6 Eagles (5-14).

Lawrence led 22-20 at halftime, and back-to-back three pointers by Emily Hagerty midway through the third quarter extended the lead to nine.

Messalonskee sophomore Brennan Doran finished with 20 points. Her buzzer-beating 3-pointer at the end of the first quarter put the Eagles ahead 15-14.

ERSKINE ACADEMY 45, CONY 37: The fourth-seeded Eagles (10-8) held No. 5 Cony (10-8) scoreless for more than 10 minutes in the second half on the way to a Class A North quarterfinal victory.

Erskine trailed 26-23 at halftime by allowed only four baskets in the second half – two each by Kristen Kirk and Sage Fortin.

Mackenzie Roderick paced the Eagles with 20 points, and Emily Clark added 10.

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Cony got 12 points from Kirk, 11 from Alyssa Redmond and nine from Fortin.

SKOWHEGAN 76, BREWER 26: Jaycie Christopher scored all but two of her 24 points during a dominant first half as the top-seeded River Hawks (19-0) routed the No. 8 Witches (6-14) in a Class A North quarterfinal.

Maddie Morris added 18 points and Annabelle Morris scored 12 for Skowhegan, which led 53-11 at halftime.

MT. DESERT ISLAND 46, ELLSWORTH 28: Mollie Gray dropped in 19 points as the third-seeded Trojans (16-4) handled the sixth-seeded Eagles (12-8) in a Class B North quarterfinal at Cross Insurance Center in Bangor.

Olivia Gray added seven points for MDI, which moves on to face No. 2 Hermon on Wednesday.

Morgan Clifford led Ellsworth with nine points. Abby Radel scored seven.

HERMON 58, MCI 30: Elizabeth Wyman scored 14 points to lead the second-seeded Hawks (17-2) to a Class North quarterfinal victory over the seventh-seeded Huskies (11-9) at Bangor’s Cross Insurance Center.

Maddie Lebel added 10 points for Hermon.

Anna Dospelova and Danielle Dow led MCI with seven points apiece.