Derrick Williams had 15 points and 12 rebounds, Lamont Jones added 17 points, and No. 18 Arizona earned a share of its first Pacific-10 Conference men's basketball title in six years with a 70-59 win over Oregon State on Thursday night in Tucson.
Coming off consecutive losses for the first time this season, Arizona pulled away in the second half to move within a game of its first undefeated home season in 12 years.
The Wildcats earned at least a share of the conference title when UCLA lost to Washington. Arizona can win the title outright by beating Oregon at home on Saturday.
Devon Collier scored 12 points for Oregon State, which committed 22 turnovers.
At Arizona State 73, Oregon 53: Rihards Kuksiks and Ty Abbott scored 22 points apiece to lead the last-place Sun Devils. Jay-R Strowbridge scored 17 points for the Ducks in their third straight loss.
At USC 74, Washington State 67: Briana Gilbreath had 19 points to power USC. Jazmine Perkins scored 20 for WSU, which had a 58-51 lead but was outscored 23-9 the rest of the way. Ireti Amojo and Sage Romberg had 11 points each.
At No. 9 UCLA 60, Washington 42: Atonye Nyingifa scored 14 points as the Bruins won easily for the 10th time in 11 games. Sarah Morton had 12 points for Washington, which committed 23 turnovers.
Arizona 50, at Oregon State 46: Ify Ibekwe scored 15 points and pulled down 16 rebounds to lead Arizona, which has won five of its past six games.Earlysia Marchbanks had 16 points for Oregon State.
Arizona State 75, at Oregon 66: Kimberly Brandon scored 20 points for ASU, which pulled away late.