Mary-Kate Marshall finished with 18 kills Friday as Oregon State (10-14, 3-10), which began the night tied for last place in Pac-12 Conference volleyball, toppled 23rd-ranked Washington State 19-25, 27-25, 25-23, 25-19 in Pullman.
Kyra Holt had a match-high 23 kills for the Cougars (17-8, 7-6). Casey Schoenlein and Taylor Mims combined for 27 kills for WSU.
Lindsey Vander Weide and Taylor Agost combined for 25 kills as 20th-ranked Oregon (16-6, 9-4 Pac-12) crated a four-way tie for first place in the conference with a 3-0 sweep at No. 8 Washington (19-4, 9-4). Stanford and UCLA are the other teams tied for first.
North Idaho (19-12, 14-2) clinched at least a share of the Northwest Athletic Conference East Division title with a 3-0 win over visiting Treasure Valley (9-20, 2-12).
Halle Hess had eight kills and 12 digs for the Cardinals, who ended their regular season. NIC will play Nov. 17 at the NWAC Championships in Tacoma.
Jessica Schmautz finished with nine kills and 10 digs while leading CC Spokane (23-13, 10-4 NWAC) to a 3-0 sweep of Columbia Basin (17-25, 7-8) at Spokane Falls Community College.
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