Washington State led Oregon by seven at the break, after the Ducks shot 8-for-21, turned it over seven times and were out rebounded by 10 in the first. The Ducks didn't score their first field goal until eight minutes into the game.
But like in Wednesday's win over Washington, Oregon started the second half with a pair of steals and baskets to catch and pass their opponent.
Mike Moser scored the first 11 points for the Ducks in the second half. Oregon opened the half on a 17-5 run and outscored the Cougars 43-22 in the second twenty.
Among the opening 11 for Moser were trio of three-pointers. He made five for the game and the team's 11 makes was one short of a season-high.
Moser finished with a game-high 21 points. "I was just trying to bring energy. I feel like in the first half, they play slow, they kind of lull you to sleep, we kind of bit for it. I just tried to come out with the energy and pick my teammates up," he said following the game.
Joseph Young said it wasn't a matter of halftime speech, but rather just recognition of what was on the line.
"It was just us wanting to win. Coach will preach about it, it's us out there playing and we have to come together as a team… because coach is not playing," he said.
Young missed his first seven field goals of the game before making 4-of-5. Even with the slow start, he reached his 18 point average.
Oregon was without fourth leading scorer Damyean Dotson Sunday. Dotson was cited for using a fake ID Friday and didn't not play. Altman would not say when Dotson would return. "We'll sit down and keep talking about it," Altman said. "We'll just go from there."
"Dot's a good young man. We'll work through this. He's got a lot of money in the bank, for two years, he's done a lot of good things. He's going to be alright."
The win was the third in a row and improved Oregon to 18-8 on the season and 6-8 in Pac-12 play.
Calliste attributed the slow start to a lack of effort and focus, something that was clearly improved during the Ducks opening run of the second half.
"The energy was just totally different. We gave our fans something to get excited about," Altman said.
Washington State tried to slow the game down in the first half. Oregon averages attempts 60 field goal attempts per game, but shot just 21 in the first half. The Ducks got closer to their average with 25 in the second half.
"The pace definitely changed. The pace we wanted we got the second half. The pace they wanted they got the first half. The pace changed to our benefit,"Altman said.
Oregon won despite being out-rebounded by WSU 35-to-24.
Oregon assisted on 15 of made field goals.