UCLA left Eugene with its first road win over Oregon since 2004, edging the Ducks 17-14 to stay unbeaten at 5-0.
Seven Oregon turnovers — including five fumbles — swung the game, while backup quarterback Dylan Raiola completed just 31% of his passes for 43 yards, two touchdowns and a fumble.
Nico Iamaleava threw two interceptions and no touchdowns for UCLA before getting injured, but the Bruins still closed out the upset.
The loss dropped Oregon to 3-2 and marked only the Ducks' second home defeat in their last 26 games, a sharp slide from their preseason No. 2 ranking.