SASKATOON, Saskatchewan (AP) — Ty Rattie scored in the third period and Mac Carruth made 34 saves to help the Portland Winterhawks beat the London Knights 2-1 on Friday night in the Memorial Cup semifinal.

Tyler Wotherspoon also scored, and Nicolas Petan added two assists for Western Hockey League champion Portland.

The Winterhawks, the Memorial Cup winners in 1983 and 1998, will face the Quebec Major Junior Hockey League champion Halifax Mooseheads on Sunday night in the Canadian Hockey League title game.

"It's pretty exciting," Winterhawks coach Travis Green said. "It was a tough game tonight. I thought London played extremely well, especially after playing four games in five nights. Very impressive team that we beat tonight. It was a hard-fought game."

Halifax beat Portland 7-4 in round-robin play in the four-team tournament.

"We know we're going to have our hands full, but I also know that with our team that when we play our best we're tough to beat," Green said. "I've got a lot of faith in our guys."

Max Domi scored for the Knights, the Ontario Hockey League winner.

Rattie broke a tie at 8:32 of the third period, circling in the London zone before beating goalie Jake Patterson from the slot for his tournament-leading fifth goal, and Portland held on for the victory.

"My heart was beating 1,000 beats a minute and I was out there doing whatever I could to keep the puck out of the net — sliding around everywhere," Winterhawks defenseman Seth Jones said. "It was definitely a big win for us tonight. We fought hard, but it was a little closer than I wanted."

Domi opened the scoring on a power play midway through the second period, and Wotherspoon tied it 2:08 later on a shot from the point that found its way through.

"It's tough," Knights captain Scott Harrington said. "Obviously, not the result that we wanted. I thought we had some real good chances and bounces just didn't go our way — a couple broken sticks on great opportunities to score. To lose 2-1, it's heartbreaking, but that's the way it goes sometimes."