Lonzo Ball had 23 points, including four three-pointers, and No. 2 UCLA rebounded from a loss to Oregon earlier in the week with a 76-63 victory over Oregon State on Friday night.
T.J. Leaf contributed 21 points and 10 rebounds while Aaron Holiday added 14 points for the Bruins (14-2, 1-1 Pac-12), who led by as many as 14 points.
Stephen Thompson Jr. had 25 points to lead the Beavers (4-11, 0-2).
Trailing 34-26 at halftime, the surprisingly resilient Beavers pulled into a tie at 38 on Thompson's three-pointer.
While the Bruins never surrendered the lead, Oregon State kept it close, pulling within 44-43 on Kendal Manuel's three-pointer with 12:52 left.