Oregon State 3, Washington 0
The Beavers took the series 2-1, breaking a 0-0 tie in the rubber match with three runs in the top of the seventh.
OSU, which had lost by one run on Thursday and won by three on Friday, took the lead Saturday on a bases-loaded walk to Nick Madrigal, then got a two-run single from Steven Kwan.
Oregon State's Jake Thompson (8-0) pitched 7 2/3 innings, allowing six hits and three walks, with eight strikeouts.
Relievers Mitch Hickey and Jake Mulholland (fifth save) did the rest.
OSU edge the Huskies in hits, 8-7, and left only six men on base, after stranding 12 in each of the first two games of the series.
OSU improved to 30-2, 14-1 in the Pac-12.
The Huskies fell to 20-14, 7-5.
Arizona 18, Oregon 4
The No. 7 Wildcats won for the second day in a row to take the series, 2-1.
Arizona's emphatic victory came with four runs in the first and second innings for an 8-1 lead.
UA finished with 23 hits. Oregon had 10.
The Ducks, ranked 22nd by Baseball America this past week, dropped to 23-10 overall and 6-6 in Pac-12 games. Arizona is 26-9, 9-6.
Kyle Kasser and Matthew Dyer were 3 for 4 for Oregon, and Tim Susnara homered.
Portland 4, San Francisco 1
At San Francisco
The Pilots posted a 2-1 series victory, never trailing in the finale versus the Dons.
A three-run third inning broke a 1-1 tie, and three UP pitchers did the rest, with starter Kevin Baker (3-4) getting the win. He allowed five hits and three walks in five innings.
Marty Luckenbach worked the closing 1 2/3 innings for his fourth save.
Tate Budnick homered for the Pilots and was 2 for 2 with two walks.
Matt Kelly had two doubles, and Devin Kopas was 2 for 5 with an RBI.
Cody Hawken walked to bring home the Pilots' final run.
UP got out of a bases-loaded jam in the eighth.
Portland raised its season record to 8-2-1 and went to 4-11 in the West Coast Conference.
USF fell to 18-18, 5-10 WCC.
Northwest Nazarene 2, Concordia 1 (10 innings)
Concordia 6, Northwest Nazarene 5 (8 innings)
At Nampa, Idaho
The visiting Cavaliers scored the winning run in Game 2 in the top of the eighth, when Andrew Barrera singled, went to third on a fielding error by the center fielder on the play and scored on a one-out fielder's choice.
Andrew Helmstadter's home run in the bottom of the 10th lifted NW Nazarene in the opener.
The Cavaliers are 9-29 overall, 7-21 in the Great Northwest Athletic Conference.
The Cavaliers are 19-19, 17-11.
Mitch Bevacqua had an RBI single in the sixth inning to put the Cavs in front 1-0. Northwest Nazarene tied the score in the bottom of the frame on a homer by Casey Sheehan.
Willamette 4, Lewis & Clark 3
Willamette 7, Lewis & Clark 3
The Bearcats scored one run in the bottom of the eighth and ninth innings to erase a 3-2 deficit and win the opener.
With a nightcap victory, Willamette improved to 26-12 overall and 18-6 in the Northwest Conference.
L&C fell to 7-31, 5-19 NWC.
Washington 5, Oregon 3 (9 innings)
At Jane Sanders Stadium
The Huskies rallied on Saturday and handed the Ducks (37-4 overall) their second straight series defeat.
Washington won two of three, dropping the fourth-ranked Ducks to 10-4 in the Pac-12
No. 12 UW out-hit UO 12-5 and raised its record to 31-10, 8-7 in the conference.
The Ducks, who fell behind 1-0 in the top of the fourth, got a two-run home run from Nikki Udria in the bottom of that inning, then made it a 3-1 lead in the sixth, when Udria hit an RBI single.
But Washington tied the score with two runs in the seventh and won it in the ninth. In both cases, the big blow was a two-run double by Morganne Flores.
Oregon was coming off a 1-2 weekend at UCLA.
The Ducks used three pitchers on Saturay, and Megan Kleist (13-2) took the loss after three innings.
Oregon State 8, UCLA 5
At OSU Softball Complex
Natalie Hampton's one-out, three-run home run capped a four-run seventh for the Beavers, who rallied to take their first series victory ever over the Bruins.
OSU trailed 5-3 after UCLA tallied four runs in the sixth.
The Beavers got one back in the bottom of the sixth, with Katy McJunkin hitting an RBI single.
Oregon State's first run in the seventh came on an RBI grounder by Shelby Weeks and a muffed throw by the UCLA third baseman that allowed Jessica Garcia, who had led off with a single, to score.
Nerissa Eason, who relieved Beavers starter Taylor Cotton, got the win and improved to 9-11 with 1 1/3 innings of hitless relief.
Oregon State improved to 21-18 overall and 4-8 in the Pac-12.
The Bruins, ranked eighth and ninth in the polls, slipped to 29-12, 5-7.
Weber State 17, Portland State 3 (5 innings)
At Ogden, Utah
The host Wildcats completed a three-game sweep, never trailing after posting two runs in the first inning and five in the second.
PSU's Tayler Gunesch was 3 for 3, and teammate Alexis Morrison doubled and drove in two runs.
Portland State fell to 6-28 overall and 4-8 in the Big Sky.
Weber State is 24-13-1, 8-3.
Western Oregon 6, Concordia 1
Western Oregon 10, Concordia 1
At Porter Park
WOU's sweep gave the Wolves a 3-1 victory in the series.
Overall, Western Oregon is 18-16, Concordia 14-24. In the Great Northwest Athletic Conference, the Wolves are 6-8, the Cavaliers 6-14.
George Fox 3, Lewis & Clark 0
Lewis & Clark 10, George Fox 3
The visiting Pioneers took the second game with a 16-6 edge in hits.
Tiana Rosario and Zoe Juarez each had two RBIs for the Pios in their win.
L&C improved to 10-22 for the season and 10-18 in the Northwest Conference.
GFU is 19-14, 15-13 NWC.
TRACK AND FIELD
• Oregon's Raevyn Rogers, in her first outdoor 800 this season, ran 1:59.10 at the Mt. Sac Relays in Torrance, California, breaking the college record that had stood for 27 years. Wisconsin's Suzy Hamilton set the previous mark of 1:59.11 in 1990.
Later in the meet, the Ducks 4x100 relay team of Mkenzie Dunmore, Deajah Stevens, Hannah Cunliffe and Arianna Washington won in 42.12 to better than college record of 42.34 set two weeks ago.
The Oregon men's 4x100 of Damarcus Simpson, Kyree King, Julius Shellmire and Marcus Chambers ran the fastest time in UO history, 39.18.
Stevens and Washington were 1-2 in the women's 100 (11.00, 11.06).
King won the men's invite 100 in a personal best of 10.23.
Oregon State sophomore Venessa D'Arpino set school records in the 100 and 200 at the Beach Invitational hosted by Long Beach State. She was eighth in the 100 in 11.70 (the old mark of 11.77 was set in 2016 by her twin, Kerissa). In the 200, she took fifth in 23.81, .01 better than her previous OSU all-time best.
Portland 4, Saint Mary's 1
At Moraga, California
The No. 43 Pilots bounced back from a Friday loss to Pacific and improved to 16-2 overall, 6-1 in the West Coast Conference.
UP and Pepperdine, both 6-1 in the conference, will meet at Portland with the title on the line at 10 a.m. Friday.
Lewis & Clark 9, Puget Sound 0
At L&C Tennis Dome
L&C's four seniors won their final home match.
No. 2 singles Michael Brewer, ranked 39th nationally, and Ben DeLuca, a transfer from Occidental who is 9-1 in singles and 9-1 in doubles, led the way. Both won 6-1, 6-1, with DeLuca in the No. 3 singles spot.
Lewis & Clark, ranked 29th in NCAA Division III, hiked its record to 12-1.
UPS is 0-12.
Saint Mary's 4, Portland 2
At Louisiana-Pacific Tennis Center
The visiting Gaels improved to 10-7 overall and 5-2 in the West Coast Conference, while UP fell to 7-10, 3-4 WCC.
Portland State 4, Sacramento State 3
At Club Green Meadows, Vancouver, Wash.
The Vikings improved to 3-12 overall and 3-8 in the Big Sky with the homecourt victory -- and beat the Hornets for the first time in 17 all-time tries.
Sac State dropped to 9-16, 7-4.
Lewis & Clark 7, Puget Sound 2
At Tacoma, Washington
The Pioneers hit the 10-win mark for the third year in a row in tuning up for defense of their Northwest Conference championship this week.
Washington 5, Oregon 0
California 4, Oregon 1
At Stanford, California
The Ducks fell to 2-7 with a pair of defeats.
Oregon's lone point came at the No. 1 spot versus the Bears, where Lindsey Vander Weide and Brooke Van Sickle prevailed 21-15, 21-19.