LAS VEGAS (AP) — George King scored 17 of his 21 points in the first half, helping Colorado run away from Washington State for an 80-56 victory Wednesday in the opening round of the Pac-12 tournament.

Colorado (22-10) took advantage of Washington State's persistent double teams on Josh Scott, working the ball around for open shots while building a 19-point halftime lead.

King got many of those, shooting 7 of 12 from the field while Scott finished with six points, five rebounds and five assists.

The fifth-seeded Buffaloes move on to meet No. 4 seed Arizona in Thursday's quarterfinals.

The 12th-seeded Cougars (9-22) kept it close early, but were no match for Colorado once the Buffaloes got going to end the season on a 17-game losing streak.

Ike Iroegbu led Washington State with 13 points and Josh Hawkinson finished with 14 rebounds, though he was held to eight points on 3-of-9 shooting.