Oregon State 10, USC 1
At Goss Stadium
Bouncing back from a 10-inning loss, Jake Thompson's pitching and KJ Harrison's two-run home run in the first inning lifted the No. 1-ranked Beavers to resounding afternoon win and a 2-1 series victory.
OSU improved to 34-4 for the season, 18-3 in the Pac-12.
The Trojans fell to 19-22, 6-12.
Thompson went eight innings, with five hits and one walk allowed and 11 strikeouts.
OSU, which finished with nine hits, made its lead 3-0 on Steven Kwan's RBI single in the fifth.
Harrison doubled home Trevor Larnach in the sixth, and the Beavers tacked on six runs in a four-hit eighth.
Catcher Adley Rutschman's two-run single hiked the score 6-1.
USC had scored on a single and double in the seventh.
Oregon State has won nine straight conference series.
Oregon 3, Arizona State 2
At PK Park
The Ducks ended up with a 2-1 edge in a low-scoring series. Oregon won Friday's opener 2-0 behind David Peterson's 20 strikeouts, then lost 4-3 on Saturday.
On Sunday, the Ducks out-hit the visitors 11-6.
Oregon raised its record to 25-14 overall, 8-10 in the Pac-12.
The Sun Devils slipped to 19-22, 6-12.
Cole Stringer (4-1), a sophomore from Central Catholic High, worked 5 2/3 innings, allowing one run on three hits, with three strikeouts.
Freshman Kenyon Yovan, from Westview High, got his 13th save. He pitched the final three innings, giving up two hits and a walk, with two Ks.
ASU scored in the second inning for a 1-0 lead.
Oregon tied the game in the third on Matthew Dyer's RBI double.
In the fourth, Jake Bennett's double pushed the UO lead to 3-1.
The Sun Devils closed to within one with a leadoff home run in the seventh. They had runners on first and second with one out in the eighth, but were retired on a ground ball and strikeout. A double-play grounder and fly out to enter in the ninth ended their comeback bid.
Pacific 2, Portland 0
At Stockton, California
Sophomore Kevin Baker's career-high 13 strikeouts weren't enough for the Pilots, who dropped the rubber match of a three-game series, mustering only three hits.
Portland fell to 9-34-1 overall and 5-16 in the West Coast Conference, while the Tigers improved to 15-26, 4-17 WCC.
Baker (3-5) gave up four hits and one earned run over eight innings, the first complete game of his career.
Oregon 7, Oregon State 0
At Jane Sanders Stadium
The No. 6 Ducks swept the Civil War series, taking a 3-0 first-inning lead on Shannon Rhodes' home run to center field and never looking back.
Rhodes added a two-run single in the fifth, as the Ducks went on top 6-0.
Oregon won the first two games, 8-0 and 7-2.
Megan Kleist (16-3) got the win on Sunday. She gave up one hit and one walks while fanning six.
UO's Nikki Udria extended her on-base streak to 41 games.
Oregon State fell to 24-22, 6-12 in the Pac-12.
Oregon upped its marks to 41-6, 14-6. The Ducks are 18-2 at home.
Concordia 4, Saint Martin's 0
Concordia 4, Saint Martin's 3
At Porter Park
The Cavaliers finished their regular season in style, with a sweep that gave them a three-game win streak.
The Cavaliers improved to 19-28 overall and 11-17 in the Great Northwest Athletic Conference.
Mattie Boucher, one of seven Cav seniors, won the opener with a seven-hit complete game. She improved to 9-14.
The finale included some dramatics, as Concordia trailed 3-0 after two innings, then posted two runs on Taylor Bussey's home run in the fourth and one run in the sixth and seventh.
An RBI single by Mariah Peterson tied the score.
One inning later, Bussey's one-out single plated Meghan Luebbert with the winning run. It was the third in the inning; Luebbert and Kelsie Merritt led off the singles.
Merritt, Peterson and Macy Besuyen were 2 for 3 in Game 1.
Saint Martin's fell to 25-17, 17-11 GNAC.
Oregon outdueled Stanford to win the snow-plagued Pac-12 championship at Boulder, Colorado, and the Ducks' Wyndham Clark claimed the individual title.
The tournament had to be shortened from 72 to 54 holes due to a couple of days of cold, wet and windy weather.
Clark, a senior from Denver, finished at 4-under-par 206, with rounds of 69-68-69.
Second place, at 209, went to USC's Rico Joey and Stanford's Franklin Huang. Hoey birdied his 51st and 52nd holes of the tourney (Nos. 1 and 2) to cut Clark's lead to two shots, but bogeyed his final hole, as Clark parred his final three holes.
Oregon totaled 1,065, 15-over, for a three-stroke edge on the Cardinal, with USC third at 1,081.
Oregon State was 11th out of 12 teams at 1,119.
Oregon's other top-10 placer, Ryan Gronlund, tied for sixth with a 214 total and closing 68.