Josh Rosen

UCLA quarterback Josh Rosen had plenty of time in the pocket to find open receivers. He completed 22 of 33 passes for 333 yards and two touchdowns.

CORVALLIS — UCLA was opportunistic at every turn in Saturday’s second quarter against Oregon State.

The Bruins made that 15-minute stretch their own as they scored 24 points in the period and took control of the game on their way to a 41-0 Pac-12 football win at Reser Stadium.

The Beavers made numerous costly mistakes, including three turnovers, and the visitors were there to take advantage.

UCLA manufactured 17 points from those three turnovers, stealing the juice from what had been a vocal announced crowd of 38,074.

The Beavers could gain no traction in the second half after falling behind 24-0, finishing with just 246 total yards.

“We just have to quit shooting ourselves in the foot, score when we can and just come out there with a different attitude,” said OSU running back Storm Barrs-Woods. “Just get it done. There’s no excuse.”

OSU quarterback Nick Mitchell lost a fumble on a keeper play near the end of what was a scoreless and generally uneventful first period.

UCLA went 66 yards and turned it into a field goal.

Mitchell was picked off on the ensuing drive, a pass to the sideline tipped by Jaleel Wadood and intercepted by fellow defensive back Randall Goforth.

UCLA then went 58 yards in seven plays, capped by Josh Rosen’s 8-yard touchdown pass to Thomas Duarte.

The OSU offense was quickly on and off the field after a three-and-out drive, though Nick Porebski’s 66-yard punt backed up the Bruins to their own 4.

That did little to slow down UCLA, with Rosen leading the way.

The freshman quarterback was 5-for-5 passing on the next possession, driving the length of the field for a 10-yard touchdown to Duarte.

The Bruins hurt themselves with two false start penalties and a fumble, but they were forced to convert just one third down on the drive before going up 17-0.

With the Bruins’ backs against their own goal line, Beavers coach Gary Andersen called the home crowd “unbelievable in that setting.” But the Beavers couldn’t respond.

“That was a big turning point and very, very disappointing,” Andersen said.

In just 45 seconds of clock time, it was 24-0.

Mitchell was intercepted by John Johnson at the UCLA 42 on a deep third-down toss that was off the mark.

Rosen turned around and fired downfield to Duarte for a 51-yard completion. Paul Perkins ran in from 7 yards out with 25 seconds left in the half.

UCLA piled up 251 yards in the second quarter after coming up with just 64 in the first. Rosen was a big part of that with 212 yards through the air.

Oregon State ran just 15 offensive plays in the second quarter, with seven of those coming on the final drive before a midfield punt near the end of the half. UCLA used 16 offensive plays in the period to get its 24 points.

“We did some good things and we did some bad things. There’s too much high and low,” said senior center Josh Mitchell.

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