PULLMAN, Wash. (AP) — Washington State appeared to be cruising after scoring two consecutive touchdowns to take the lead late in the third quarter against Oregon State. Then the Beavers struck for five unanswered touchdowns, helped by a slew of WSU turnovers, for a 52-24 win on Saturday night.
Sean Mannion threw for 493 yards and four touchdowns for Oregon State (5-1, 3-0 Pac-12), which won its fifth game in a row since a shocking opening loss to FCS Eastern Washington.
"Our defense played huge," Mannion said. "As soon as they started to generate some turnovers, we had a short field and we were able to go in and get seven every time."
Oregon State had four interceptions and recovered two WSU fumbles.
"We were proud of the way we were able to get points off them," Mannion said.
The home loss dealt a blow to Washington State's (4-3, 2-2) hopes of reaching a bowl for the first time since 2003.
"For two-thirds of the game we played real well," WSU coach Mike Leach said. "The last third we faced adversity and waved the white flag."
Washington State led 24-17 late in the third quarter when the Beavers erupted for three touchdowns in just over two minutes to take control.
"It was kind of a landslide," said WSU offensive lineman Elliott Bosch.
"I don't know if they all had dentist's appointments or what, but these games are 60 minutes," Leach said.
Mannion, the Pac-12 passing yardage leader, completed 34 of 51 passes and was intercepted once. Brandin Cooks caught 11 passes for 137 yards and two touchdowns, and ran for another. Richard Mullaney caught five passes for 122 yards.
Washington State quarterback Connor Halliday completed 26 of 49 passes for 248 yards as the Beavers were able to shut down WSU's potent pass attack. He was intercepted three times.
Washington State took the opening kick and drove to the Oregon State 9, but had to settle for an Andrew Furney field goal.
Oregon State's Trevor Romaine kicked a 20-yard field goal to tie the score at 3 at the end of the first quarter.
On the ensuing series, Halliday passed the Cougars to the Oregon State 3, where Marcus Mason ran it in for a 10-3 lead.
The Beavers replied with a 75-yard drive, with Mannion throwing a 7-yard touchdown pass to Connor Hamlett that tied the game at 10.
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