California 4, Oregon 1
At Berkeley, California
The Bears snapped an eight-game UO win streak and salvaged one victory in the three-game series that opened Pac-12 play for both clubs.
Oregon slipped to 13-5 overall.
Cole Stringer (2-1) took the loss, as the Ducks got eight hits to eight for Cal (9-9). He allowed four hits and two runs in four innings.
The Ducks loaded the bases with two out in the ninth, but pinch-hitter Braden Stutzman struck out to end the game.
Gabe Matthews was 2 for 4 with a double for Oregon.
San Diego 8, Portland 2
At San Diego, California
The No. 25 Toreros (13-4 overall) completed a three-game sweep to open the West Coast Conference season.
Portland fell to 2-16 overall.
UP starter Jordan Horak (9-4) gave up four runs on four hits in 5 1/2 innings.
Montana State Billings 6, Concordia 3
Montana State Billings 5, Concordia 4
At Billings, Montana
MSU Billings pulled out two close games Sunday to take the series 3-1.
The home team, which scored twice in their last at-bat (bottom of the seventh in the nightcap) are 7-13, 5-5 in the Great Northwest Athletic Conference.
The Cavaliers are 5-15, 3-7 GNAC.
The Yellowjackets broke a 4-4 tie in the first game with two runs in the sixth inning. Concordia's Andrew Barrera had tied the score with his three-run homer in the fifth.
Linfield 3, Lewis & Clark 1
Linfield 10, Lewis & Clark 5
The Wildcats led in hits, 7-3 in the opener and 14-11 in the nightcap.
Sean Shepherd homered for the Pioneers in the second game, when he was 3 for 5 with two RBIs.
Linfield climbed to 10-7 overall and 8-7 in the Northwest Conference.
L&C fell to 4-14, 3-6 NWC.
Oregon 10, California 2
At Jane Sanders Stadium
The No. 3 Ducks made it to 27-0 this season, completing a three-game sweep of visiting Cal to open the Pac-12 campaign.
The Bears, ranked 23rd, dropped to 17-8.
California got a run in the top of the first, but was down 5-1 when it scored its other run.
The Ducks came back with four runs in the fourth and ended the game on the eight-run rule in the fifth.
Oregon got its 10 runs on seven hits and three Bears errors.
Megan Kleist (9-0) went the distance.
Jenna Lilley had a double and three RBIs for Oregon.
Arizona 7, Oregon State 4 (8 innings)
At Gill Coliseum
No. 5 Arizona got its three-game sweep in Corvallis, but it took an extra inning.
The Beavers tied the game on Natalie Hampton's two-out, three-run home run in the bottom of the seventh.
OSU fell to 0-3 in the Pac-12 and 15-11 overall.
Arizona didn't score until the fourth and finished with an 8-5 edge in hits, the big blow a two-run homer in the eighth that turned a 5-4 lead into a three-run bulge.
Reliever Nerissa Eason (6-7) took the loss.
Whitworth 1, Lewis & Clark 0 (8innings)
Whitworth 11, Lewis & Clark 3 (7 innings)
At Huston Sports Complex
In the opener, L&C allowed one hit through seven innings, then lost on a pair of singles.
Kali Akimseu (0-5) took the loss after giving up three hits in 7 1/3 innings.
The Pioneers are 1-6 in the Northwest Conference and 1-10 overall.
Whitworth improved to 4-1 in the NWC and 13-4 this season.
Oregon 4, USC 3
At Student Tennis Center
Oregon got its first victory ever over the Trojans; the all-time series is 1-22.
The deciding match went to a third set, where Alyssa Tobita defeated No. 38 Jessica Failla, 6-4, 6-7(6), 6-4.
The Ducks improved to 3-1 in the Pac-12 and 9-6 overall.
Lewis & Clark 8, George Fox 1
The Pioneers won all but two sets in raising their Northwest Conference record to 9-1.
George Fox dropped to 5-3.
Colorado 16, Oregon 11
At Boulder, Colorado
The Ducks fell to 3-1 in the Mountain Pacific Sports Federation standings, while No. 4 Colorado improved to 2-0 in the league and 9-0 overall.
Oregon (6-3 overall) took a 5-0 lead late in the first half and trailed 8-3 at the break.
Jill Zubillaga had four goals for UO, and Mariah Gatti and Shannon Williams each had three.