Cody Vaz passed for 332 yards and three touchdowns in his first start since high school and No. 10 Oregon State used a strong start and bigger finish to beat Brigham Young 42-24 on Saturday.
Vaz was filling in for Sean Mannion, who is out indefinitely with a left knee injury.
Markus Wheaton caught two first-quarter TD passes, and scored on a 12-yard reverse in the fourth, while cornerback Jordan Poyer returned an interception 49 yards to seal the victory against BYU (4-3).
Oregon State is 5-0 for the first time since 1939.
Vaz started 5 of 5 for 75 yards and finished 20 of 32 against BYU's fifth-rated defense.
BYU quarterback Riley Nelson completed 28 of 51 passes for 305 yards and a touchdown but had three interceptions.
Oregon State rolled up 450 yards offense.
Brandin Cooks caught eight passes for 173 yards for the Beavers.