The Cougars (20-10, 11-6 WCC) remained a game ahead of San Francisco and Santa Clara for third place in the league with one game remaining. Portland (10-20, 2-15) suffered its 15th-straight conference loss on Senior Night while playing without injured senior star Alec Wintering.
Filling in for injured forward Yoeli Childs (ankle), sophomore Braiden Shaw made his first career start and grabbed a career-high 11 rebounds. Eric Mika added 19 points and eight rebounds and Nick Emery had 16 points and made three 3-pointers.
"We needed some momentum for Saturday's game, and I think we got it," Bryant said.