Oregon State 11, California 10
At Goss Stadium
In a wild one, the Beavers survived giving up the most runs by an opponent this season.
OSU, ranked No. 1 in the nation, improved to 37-4 overall and 20-3 in the Pac-12.
The Bears fell to 21-23, 12-11, going into the series finale at noon Sunday.
Steven Kwan hit a sixth-inning grand slam Saturday for Oregon State, one of six home runs before the regular-season record crowd of 3,593.
Drew Rasmussen, who came out of the bullpen in the seventh, gave up two runs in the eighth but kept Cal at bay in the ninth to earn the win. Rasmussen, who recently returned from a 2016 injury, is 1-0, and the Beavers' bullpen is 14-1.
KJ Harrison hit OSU's other HR, a two-run blast in the first.
Nick Madrigal had four hits, including the game-winner, an RBI single in the seventh.
Oregon 8, Washington State 2
Washington State 2, Oregon 1
At Pullman, Washington
David Peterson's pitching and five UO runs over the final three innings gave the Ducks a win in Game 1.
Petersen (10-2) struck out 10 batters, giving him a school-record 117 Ks this year. He allowed two runs in seven innings.
Taylor Travess broke a 2-2 tie with a solo home run in the seventh.
In the nightcap, Matt Mercer (5-5) allowed two runs on six hits over 8 1/3 innings, retiring 21 in a row in one stretch, but WSU held off the Ducks with center fielder Danny Sinatro making a diving catch after Oregon had put a runner on secone base.
The Ducks are 26-16 for the season and 9-11 in conference play.
The Cougars are 21-22, 7-13 Pac-12.
The series concludes at 1 p.m. Sunday.
Saint Martin's 7, Concordia 4
Concordia 9, Saint Martin's 7 (10 innings)
At Lacey, Washington
Andy Taylor of the Cavaliers stroked a two-out, two-run double in the 10th to give the visitors a split.
The Cavs are 13-35 overall and 11-27 in the Great Northwest Athletic Conference.
Saint Martin's is 17-28, 10-28 GNAC.
Both teams will wrap up their season with a noon Sunday doubleheader.
Oregon 11, Florida State 0 (5 innings)
Oregon 3, Florida State 1
At Jane Sanders Stadium
The No. 5-ranked Ducks upended No. 2 Florida State twice before 2,517 in Eugene.
The series winds up on Sunday with a game at 5 p.m.
The wins could help Oregon earn the right to host an NCAA playoff regional and a potential super regional series.
Oregon climbed to 43-6, while FSU slipped to 48-5-1.
UO sophomore Megan Kleist (17-3) won Game 1 with a two-hitter that included six strikeouts and one walk. The Ducks made short work of the Seminoles by batting around in the fourth and fifth innings. Oregon scored five runs in each of those frames and finished the opener with 12 hits.
In Game 2, the Ducks rallied with three runs in the sixth to give the victory to freshman Magie Balint (18-3), who allowed three hits and three walks, with seven strikeouts.
Oregon State 3, Utah 1
At OSU Softball Complex
OSU clinched the three-game series with win No. 2 against the No. 10/11 Utes.
The Beavers were trailing 1-0 before they broke through with three runs in the sixth inning. An error brought home Oregon State's first run, and Shelby Weeks had a two-run single.
Taylor Cotton (13-7), who had a one-hit shutout on Friday, allowed two hits and five walks, with two strikeouts, in going the distance in Game 2.
The Beavers improved to 27-22 overall and 8-12 in the Pac-12, while the Utes fell to 32-11, 12-6.
Sunday's finale of the set is at 11 a.m.
Sacramento State 4, Portland State 2
At Gordon Faber Recreation Complex
The host Vikings, already eliminated from Big Sky playoff contention, ended their season at 9-36 overall and 7-14 in the conference.
Sac State (20-26-1, 10-10) gave up nine hits and had six, but PSU stranded eight runners.
Sophomore Alyssa Burk's eighth consecutive complete game left her at 5-16.