Once again the Oregon Bench led the way. Elgin Cook had a career-best 23 points and eight rebounds in what was a homecoming game for the Milwaukee native.
The Ducks led by double digits for much of the game, but withstood a Cougar run to cut it within 56-53 in the second half. Cook had the answer as he had all day, converting a three-point play that led to an Oregon 15-4 run.
With the Cook-led surge, the Ducks never looked back and led by as many 25 points.
Cook saw extended minutes as Oregon's front court dealt with heavy foul problems. All five Oregon big men committed three fouls or more, including Cook who had three.
The problems hit the team's second-leading scorer Mike Moser the hardest, limiting him for nearly the entire second half after he picked up his fourth foul with 14:20 left in the second.
Moser still managed seven points and six rebounds despite the limited minutes.
The Ducks won despite making just two three point shots all game. Moser hit on in the first and Calliste one in the second, but the Ducks were just 2-for-13 from deep.
The Callste three was his only made field goal of the game, but he finished with 14 points due to 11-of-12 shooting at the stripe.
The Ducks led by 15 with 3:07 left in the first half, but were outscored 7-0 for the remainder of the half, taking a 39-30 lead into the break.
Joseph Young was the third Duck in double figures, reaching his average of 19 points on 7-for-12 shooting.
The Ducks will play second-seeded Wisconsin on Saturday.