BYU rolled over Oregon State in the second half, ending the small momentum the Beavers gained from their first win of the season a week ago against Arizona.
Tied 14-14 at the break, the Cougars rolled to a 38-28 victory because the Beavers defense couldn't get a stop (BYU punted just once).
Telling stat: Oregon State was outrushed 282 yards to 59.
It also didn't help the Beavers had four turnovers -- two fumbles, two interceptions -- and missed both field goal attempts.
Quarterback Sean Mannion was 27-of-43 for 306 yards, but is still playing like a redshirt freshman with no help from a running game.
The Beavers fall to 1-5. They visit Washington State on Saturday, which figures to be a critical game for both team.