The No. 13 Ducks (11-0) beat Brigham Young 100-96 in overtime after a furious second-half comeback on Saturday night.
Jason Calliste scored a career-high 31 points for the Ducks (11-0) and Joseph Young had 25 points.
All-America candidate Tyler Haws led the Cougars (8-5) with 32 points, and Kyle Collinsworth added 15 points, five rebounds and eight assists.