The loss spoiled redshirt freshman Sean Mannion's debut as starter for the Beavers, who fall to 0-3 for the first time since 1996.
Mannion completed 24 of 40 passes for 287 yards and a touchdown, but he was also intercepted and had a costly fumble for a UCLA score.
After the Bruins scored to make it 27-19 with 6:15 to go, the Beavers were stopped at the UCLA 22-yard line when they tried to go for it on fourth-and-eight.
Brehaut, who was named starter after Kevin Prince struggled in last week's loss to Texas at the Rose Bowl, completed seven of 11 passes for 146 yards for the Bruins (2-2, 1-0 Pac-12).
We'll have more coverage on BF.C a little later this evening..
Beavs can't hold serve at home, drop to 0-3
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