The Buffaloes remain unbeaten in four meetings with Northern Arizona (4-6), a member of the Big Sky conference which dropped to 0-3 against Pac-12 teams this season. The Lumberjacks were beaten by Oregon and Arizona earlier this season.
DeWayne Russell had 15 points and Max Jacobsen 10 to lead the Lumberjacks, whose 47-point loss represented their largest margin of defeat this season. The previous high was a 43-point loss to Arizona.
Colorado was breezing by the break, taking a 57-21 lead while piling up a season high in points for a half.
Gonzaga center Przemek Karnowski, who missed most of last season with a back injury, says he is returning for another year.
Wisconsin forward Nigel Hayes has withdrawn from the NBA draft and will return to the Badgers for his senior season.
Recruiting reporter Jeff Borzello has gotten grilled for his selections of underachieving and overachieving college basketball programs. He joins Phil Murphy to explain his rankings.