CORVALLIS – Stephen Thompson Jr. scored a career-high 34 points, and brother Ethan Thompson hit a go-ahead 3-pointer in overtime as short-handed Oregon State beat USC 79-74 Thursday night in Gill Coliseum.

The Beavers (10-4, 2-0 Pac-12) were without Tres Tinkle, who sat out with a left ankle injury. Tinkle turned his ankle during last Saturday’s 77-72 win at Oregon. Tinkle leads OSU in scoring, rebounds and assists this season.

Ethan Thompson’s 3-pointer with one minute remaining gave the Beavers a 75-74 lead. OSU was able to finish the game with free throws.

Oregon State is 2-0 in Pac-12 play for the first time since the 2010-11 season.

Here is a quick recap:

Top performances: Thompson Jr. hit 11 of 19 shots and made five 3-pointers to notch a season high. Thompson Jr., who had 17 points during the first half, also had xx rebounds.

Oregon State’s Kylor Kelley had seven blocked shots, including six after halftime. Kelley extended his school record of multi-block games to 14.

USC’s Bennie Boatright hit 14 of 24 shots and poured in a career-high 37 points to lead the Trojans (9-7, 2-1)

Key stretches: Both teams enjoyed big stretches during the first half.

USC got the jump first, running off 10 consecutive points – five coming from Kevin Porter Jr. – to grab a 20-11 lead.

The Beavers, trailing by as many as 11 points, caught fire midway through the first half. Led by Thompson Jr.’s shooting and spark from Antoine Vernon and Warren Washington, ran off 18 consecutive points to take a 32-25 lead. USC settled down during the final five minutes, closing to within 36-31 by halftime.

The teams traded a lot of baskets during the first 12 minutes of the second half before the Trojans made a push. Trailing 62-56, USC ran off five consecutive points to pull to within 62-61 with five minutes remaining.

USC grabbed its first lead at 66-64 with 90 seconds remaining on a layup by Nick Rakocevic. But the Beavers eventually forced overtime, as Ethan Thompson putback with 18.5 seconds remaining tied the game at 66.

Next up: UCLA, 7 p.m. Sunday, Gill Coliseum.

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