Oregon 42, UCLA 14: Byron Marshall ran for 133 yards and three touchdowns, and the No. 2 Ducks wore down the No. 12 Bruins' stout defense in Eugene, Ore. Marcus Mariota threw for 230 yards and a score for Oregon (8-0, 5-0 Pac-12).

The Bruins (5-2, 2-2) went into halftime with the score knotted at 14 but were shut down by the Ducks in the second half. Brett Hundley completed 13 of 19 passes for 64 yards and a touchdown but also threw two interceptions, including one early in the fourth quarter that led to an Oregon touchdown. He also ran for 64 yards and a score.

The Bruins were without junior tailback Jordon James, who missed his third straight game with an ankle injury. He had run for more than 100 yards in each of UCLA's first three games.

The Bruins were also dealing with injuries on their offensive line and started three true freshmen. UCLA has played 17 true freshmen this season.

Arizona 44, Colorado 20: Ka'Deem Carey rushed for four touchdowns, and the Wildcats extended the Buffaloes' Pac-12 losing streak to 12 games, in Boulder, Colo.

Carey, the nation's leading rusher, ran for 119 yards on 23 carries. But it was his quarterback, B.J. Denker, who surprised the Buffs on the ground with a career-best 192 yards on 15 keepers.

He got 100 of those yards on two scampers up the middle, a career-long 54-yard gem and a 46-yarder that got the Wildcats (5-2, 2-2) out from the shadow of their own goal line.

Carey, who came in averaging 160 yards a game, scored from 1, 7, 1 and 6 yards -- one TD in each quarter. He has reached the end zone in nine straight quarters against the Buffaloes (3-4, 0-4).

His last score Saturday came after the Buffs tried a fake punt on fourth-and-5 from their own 17, but Trevor Ermisch tackled punter Darragh O'Neill at the 18. Two plays later, Carey was in the end zone again for a 41-20 lead.

Denker also threw for 365 yards and a touchdown.

USC 19, Utah 3: Cody Kessler passed for 230 yards, Nelson Agholor scored the game's only touchdown on an early 30-yard reception, and the Trojans forced four turnovers in a victory over the Utes in Los Angeles.

Andre Heidari kicked four field goals for the Trojans (5-3, 2-2 Pac-12), who earned their second victory in three games under interim coach Ed Orgeron.

Travis Wilson passed for just 51 yards and threw two interceptions while struggling with a sprained finger for Utah (4-4, 1-4), which has followed up its stunning victory over Stanford with losses to Arizona and USC. The Utes haven't won at the Coliseum since 1916.

USC was down to fewer than 50 scholarship players against the Utes, and a few more Trojans got hurt during the game, resulting in some desperate decisions for a program already faced with badly depleted depth from NCAA scholarship sanctions.

Walk-on Chris Willson, a former pitcher at Wake Forest, caught a pass late in the first half with USC's top four tight ends unavailable to play. Injured safety Dion Bailey watched the first half in street clothes before suiting up for the second half when freshman star Su'a Cravens strained his groin while returning an interception late in the first half.

-- ASSOCIATED PRESS