Askia Booker scored 21 points to lead six players in double figures, and the Buffaloes snapped a four-game skid by routing the Cougars, 90-58, Saturday night at Coors Events Center in Boulder, Colo.
Jaron Hopkins added 13 points and Wesley Gordon had 10 points and 14 rebounds for Colorado (10-9, 3-4 in Pac-12). The 32-point margin was the Buffaloes' biggest of the season, even though they again were without injured Josh Scott (back) and Xavier Johnson (ankle).
Josh Hawkinson and Davonte Lacy had 12 points apiece to lead Washington State (9-10, 3-4), which lost its third in a row.
Up by 16 points at the break, the Buffaloes opened the second half with an 11-5 burst capped by a three-pointer by Hopkins to stretch their lead to 58-36.
A bit later, the Buffaloes hit three-pointers on three successive possessions — two of them by Booker and the other by Gordon — as Colorado opened up a 28-point lead with 9:20 remaining. Soon thereafter, the Buffaloes began substituting freely.
The Wildcats (18-2, 6-1 Pac-12) overcame early foul trouble to their frontcourt to finish the first half ahead by 10. They came out of the break with another big burst, going ahead by 24 points and cruising to their fourth consecutive win.
It was a small slice of redemption for Arizona after Cal upset the top-ranked and undefeated Wildcats, 60-58, on Justin Cobbs' last-second shot a season ago at Haas Pavilion. The Golden Bears (11-9, 1-6) are far from that team now. They've lost six straight and eight of nine games, falling into last place in the conference.
Randle and Brown contributed 21 points apiece and Nastic added 20 as the Cardinal (14-5, 5-2 Pac-12) won their eighth in 10 games. Rosco Allen had 12 points for Stanford.
Savon Goodman came off the bench to score 18 points for the Sun Devils (10-10, 2-5), who were coming off their second largest conference road victory in school history, a 79-44 pasting at California on Thursday night.