Jordan Adams added 14 points, Kyle Anderson 12 and Travis Wear 11 for the Bruins (18-6, 8-3 Pacific-12 Conference), who shot a season-high 62 percent from the field one game after hitting a season-low 33 percent in a two-point win over Washington on Thursday.
Brock Motum scored 17 points, and Royce Woolridge added 16 for the Cougars (11-13, 2-9), who were coming off a four-point loss at Southern California. They have lost four in a row and nine of their last 11.
Washington State’s 19 turnovers were one off the team’s season high.
The Cougars hit five consecutive 3-pointers to start the game and didn’t score their first 2-point basket until 3 minutes, 41 seconds remained in the half. They led 9-7 before UCLA went on a 32-15 run and ended the half leading 39-24. The Bruins shot 59 percent, had seven steals and outscored the Cougars in the paint, 20-4.
Muhammad’s highlight basket came on a one-handed dunk after Larry Drew II found him alone on a fastbreak. The Bruins didn’t have an extended scoring run in the second half, but they built a 20-point lead on a basket by Anderson.
Trailing 67-47, Washington State put together its lone big run, outscoring UCLA 13-3 to trail 70-60. Dexter Kernich-Drew had seven points and Woolridge added four in a row in the spurt that ended when D.J. Shelton turned the ball over.
Drew II got fouled and made both free throws to launch a 6-0 run that ended the game for the Bruins.
At No. 19 Oregon 73, Utah 64: E.J. Singler had 21 points, and the Ducks overcame a poor start to end their three-game losing streak by beating the Utes.
Damyean Dotson added 16 points for Oregon (19-5, 8-3), which had been on a slide after opening Pac-12 play with seven wins in a row. Jason Washburn had 20 points and seven rebounds for Utah (10-13, 2-9).
Stanford 62, at Arizona State 59: Dwight Powell scored 22 points, and the Cardinal was 10-for-18 on 3-pointers to beat the Sun Devils. Stanford (15-9, 6-5) won its fifth in a row over Arizona State (18-6, 7-4).
ASU trailed by as many as 16 in the second half but had a chance to tie at the end. Bo Barnes’ 3-pointer bounced off the rim with five seconds to play.