For the second consecutive game, Arizona State (21-10, 10-8 Pac-12) started out cold from the field, missing its first six shot attempts and falling behind by eight points early on as the Sun Devils struggled to find openings against the Oregon State 1-3-1 zone defense. Senior Bo Barnes came off the bench and immediately provided a lift, connecting on back-to-back buckets to spark a 9-0 run which put ASU ahead 10-9.
But Oregon State (15-15, 8-10 pac-12) responded with a run of their own as the freshman Duvivier scored eight consecutive points to help the Beavers regain the lead after Arizona State point guard Jahii Carson was whistled for his second personal foul.
The two teams would continue to trade runs, and after four straight points from Carson would pull the Sun Devils within two, Duvivier ended the first half by knocking down his third three pointer, giving the Beavers a 33-28 lead at the break.
Oregon State used an 11-0 run in early stages of the second half to jump ahead 48-35 and would lead by as many as 14 points following a Daniel Gomis lay-up with 10:36 to go. But ASU was not done yet.
Carson answered with a three point play followed by Jon Gilling's fifth three point bucket of the game. A 13-4 run by the Sun Devils, capped off by a pair of Carson free throws, narrowed the deficit to four with just under six minutes to play.
After a Nelson lay-up put the Beavers ahead 67-61 with 49 seconds, Gilling knocked down another three pointer following an Eric Jacobsen offensive rebound to cut the lead in half with 35 seconds to play. Oregon State's Hallice Cooke missed the front-end of a one-and-one free throw attempt, providing the Sun Devils with one last chance to extend the game.
Arizona State pushed the ball down the court and Shaquielle McKissic found an open Jermaine Marshall, who converted his only field goal of the day to tie the game at 67 with 19 seconds remaining and ultimately force the overtime period.
However, after the Sun Devils took a brief 71-69 lead - Arizona State's first lead since the 7:22 mark of the first half - following a Jordan Bachynski transition dunk, Oregon State closed the game on a 9-4 run, handing ASU its second consecutive loss and fifth straight road defeat.
Despite being plagued by foul trouble throughout the game, Carson managed to lead ASU with 24 points and seven assists in the loss. Gilling finished with 20 points on 6-8 shooting, including 6-7 from deep, while McKissic was the only other Sun Devil in double figures with 12 points.
After going scoreless in the first half, Bachynski finished with nine points but had just four rebounds as the Sun Devils were out-rebounded 44-33 by the Beavers. Oregon State also added 18 offensive rebounds leading to 21 second chance points.
For the second straight game, Marshall struggled from the field, scoring just five points on 1-12 shooting. Marshall's five points were his fewest since scoring four points against Utah on January 23rd.
The loss was ASU's first overtime defeat this season after winning their previous three overtime games while Oregon State's 8-10 conference mark equals their best Pac-10/12 finish since 1993.
However, the news wasn't all bad for Arizona State on Saturday. Despite Oregon upsetting Arizona for its seventh consecutive win to close-out the season, the Sun Devils managed to finish third in the Pac-12 after California defeated Colorado 66-65 in overtime. The Sun Devils will receive a first round bye in next week's Pac-12 Tournament in Las Vegas and face the winner of the Stanford-Washington State game. Tip-off for ASU's game is scheduled for 8:30 PM PT on Thursday.