The WCC added Oregon State and Washington State as affiliate members across 12 different sports - including men's and women's basketball - for a two-year term beginning next season, the conference announced Friday.
The arrival of the Beavers and Cougars brings the number of basketball teams in the WCC to 11.
Both schools needed a new home after their Pac-12 cohorts departed for other major conferences. Their football teams previously announced an agreement to play six Mountain West conference opponents for the 2024 season.
"These are two prestigious institutions with a robust athletics profile that each embody the intrinsic values of the WCC," WCC commissioner Stu Jackson said in a statement. "The conference and its member institutions provide valuable opportunities in recruiting, scheduling, broadcast exposure, and an exceptional student-athlete experience.
"OSU's and WSU's institutional support and passionate fan bases will only enhance this experience across the conference."
On the men's side, Gonzaga and Saint Mary's have dominated WCC play over the last two-plus decades. Meanwhile, the Bulldogs' women's squad has captured 17 of the previous 20 regular-season conference titles.
Oregon State's men's team made a surprise run to the Elite Eight during the 2020-21 campaign.
