PORTLAND — Long, lean and hungry, Yarmouth’s big men weren’t satisfied with one chance per trip in the first half of Saturday’s Western Class B quarterfinal with Mountain Valley. They demanded, and worked for, more.

Yarmouth dominated the offensive glass in the first half, then ran Mountain Valley off the court in the second half and cruised to a 77-52 victory at the Portland Expo. The Clippers advance to face top-seeded Greely in the semifinals on Thursday night at the Cumberland County Civic Center

Slashing junior guard Josh Britten tallied a game-high 28 points and six steals. Luke Pierce added 14 points seven rebounds and five steals and Sam Torres poured in 13 points off the bench. Cam Kaubris paced Mountain Valley with 13 points, while Izaak Mills added 12 and Zach Radcliffe 10.

“We knew we had a height advantage on them,” said the 6-foot-1 Pierce, touting the 6-3, 6-5, 6-5 frontcourt of Connor Ertz (four rebounds, three offensive), Aidan Sullivan (seven rebounds, four offensive) and Matt Murphy (nine rebounds). “Our guards have some height and can crash. It was very key getting second opportunities.”

The fourth-seeded Clippers (15-4) out-rebounded the Falcons, 21-7 in the first half, including 11-1 on the offensive boards.

“We were in position to get rebounds, but the physical stuff today… We got beat doing our own normal stuff,” Mountain Valley coach Rick White said. “We’re usually pretty physical. I thought they were much more physical. They rebounded when they had to.”

Kaubris’ runner tied the game for the last time at 22 early in the second quarter. A Britten 3-pointer followed by a putback by Aidan Sullivan (seven rebounds) sparked a 10-3 run that put the Clippers in front for good. Britten later found Sullivan wide open underneath for an uncontested layup that helped widen the margin to 38-27 by halftime.

“Other than being down by 11, I couldn’t find too much fault with how we played in the first half,” White said. “We had everything we wanted. We just didn’t execute, and they executed much better than us. We did a great job moving the ball. We just couldn’t execute inside the paint.

Britten scored seven straight points and Yarmouth quickly widened its lead to 15 to start the second half. Three-pointers from Kaubris and Theriault brought Mountain Valley (16-3) within 11, but the Falcons failed to score a single basket inside the arc on eight attempts in the quarter, and the Clippers went on a 10-1 run through the early stages of the fourth quarter to pull away.

“It really comes down to defense,” Pierce said. “Whether it be forcing a bad shot, causing a turnover, and that gets our offense going. Sam was flying down the wing making every single fast break layup.”