Sean Mannion's 66-yard touchdown pass early in the fourth quarter gave Oregon State the lead and Michael Doctor's 35-yard interception return for a score with 1:38 left sealed the Beavers' 35-27 win over No. 6 Arizona State on Saturday night.
Mannion threw for 251 yards and two touchdowns for the Beavers (5-5, 2-5 Pac-12), who snapped a four-game losing streak. Mannion hit Jordan Villamin with a 66-yard scoring pass with 10:55 left to put the Beavers up 28-27 after trailing 24-14 at the half.
The Sun Devils (8-2, 5-1 Pac-12), who are ranked No. 6 in the College Football Playoff rankings, snapped a five-game winning streak. The loss to the slumping Beavers hurt Arizona State's shot at a second straight berth in the Pac-12 championship game.
Villamin had four catches for 127 yards, while Terron Ward ran for 148 yards and an early touchdown for the Beavers.
at No. 14 Arizona 27, Washington 26: Casey Skowron kicked a 47-yard field goal as time expired to give Arizona the victory.
Skowron, who also had an 18-yard touchdown run on a fake field goal, missed a first attempt wide right but the Huskies called timeout just before the kick and he got a second try.
Washington (6-5, 2-5 Pac-12) was running out the clock but rather than take a knee the Huskies handed the ball to Deontae Cooper.
Tra'Mayne Bondurant knocked the ball out of Cooper's hands and Derrick Turituri recovered for Arizona (8-2, 5-2) at the Washington 45 with 1:23 to go. The Wildcats moved to the 30 and left it up to Skowron.
No. 23 Utah 20, at Stanford 17 (2 OT): Travis Wilson threw a three-yard touchdown pass to Kenneth Scott in the second overtime, as the Utes (7-3, 4-3) ended a two-game losing streak.
Kaelin Clay caught a 25-yard touchdown pass on the first play of overtime before the Cardinal came back with the tying score. Jordan Williamson kicked a career-long 51-yard field goal — the same one Stanford passed up late in the fourth quarter — to start the second session, setting the stage for the Utes' dramatic finish.
Wilson found Scott on an inside slant on third down, then was swarmed by teammates streaming into the end zone, spoiling Stanford's Senior Day celebration. The Cardinal (5-5, 3-4) dropped consecutive games for the first time since October 2009.