OJAI, Calif. - No. 5 Stanford blanked No. 34 Washington State 4-0 on Thursday afternoon at the Pac-12 Championships, representing the first step to capturing four straight conference crowns.

Winners of 15 in a row, Stanford (20-1, 10-0 Pac-12) produced its 13th shutout while defeating Washington State (19-10, 3-7 Pac-12) for the third time this season, having won the regular-season matchup in addition to a victory during ITA Kick-Off Weekend.

The Cardinal secured a hard-fought doubles point, with Emily Arbuthnott and Michaela Gordon rallying for a 7-6 (7) victory on court two as the difference.

Janice Shin (6-1, 6-2) and Caroline Lampl (7-5, 6-3) put Stanford on the brink of clinching before Emma Higuchi made it official with a 7-6 (5), 6-3 triumph at the No. 6 spot.

Stanford next faces No. 15 USC on Friday in the semifinals at 12 p.m.

Stanford is seeking a fourth straight conference title, which would be its longest stretch since a 21-year stranglehold on the Pac-10 from 1988-2008, with the final season resulting in a share of the crown with UCLA.

DOUBLES

1) No. 41 Mylonas/Sato (WSU) d. No. 14 Lampl/ Kimberly Yee (STAN) 6-3

2) No. 22 Arbuthnott/Gordon (STAN) d. Ates/Yang Lee (WSU) 7-6 (7)

3) No. 51 Lord/ Niluka Madurawe (STAN) d. Bayerlova/Miksovska (WSU) 6-4

Order of Finish: 1, 3, 2