Silas Melson scored a career-high 23 points, making seven three-pointers, as No. 15 Gonzaga routed Portland 103-57 on Thursday night.

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SPOKANE — Silas Melson scored a career-high 23 points, making seven three-pointers, as No. 15 Gonzaga routed Portland 103-57 on Thursday night.

Rui Hachimura added 20 points for Gonzaga (15-3, 5-0), which has romped through the bottom of the West Coast Conference so far.

Marcus Shaver Jr. scored 16 points for Portland (6-12, 0-5), which is in the second year of a rebuilding effort under former NBA player Terry Porter. The Pilots have dropped five games in a row.

Melson hit 7 of 12 from three-point range and the Zags finished with 13 threes in the game. The Zags also dominated inside, easily winning the rebound battle.

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Portland was undone by 30 percent shooting from the field.

Oregon upsets Arizona State

TEMPE, Ariz. — Payton Pritchard scored 18 points and hit two free throws with 13.8 seconds left, helping Oregon hold off No. 11 Arizona State 76-72.

Oregon (12-5, 2-2 Pac-12) used a late spurt to go up eight points and hit four free throws in the final 32 seconds to earn its biggest win of the season.

The Ducks dominated the paint, outscoring Arizona State 38-16 and scoring 15 second-chance points on 15 offensive rebounds. Elijah Brown had 18 points and hit two free throws with 32 seconds left for Oregon.

The senior trio of Tra Holder, Shannon Evans II and Kodi Justice tried to bring the Sun Devils (13-3, 1-3) back in front of a rowdy Wells Fargo Arena crowd.

Evans hit a corner three with 17.5 seconds left to pull Arizona State within 74-72, but the Sun Devils got no closer to lose for the first time in nine home games.

Men’s games

At No. 17 Arizona 62, Oregon State 53

Allonzo Trier scored 15 of his 21 points in the second half as Arizona pulled away from a sluggish, close game in the final 7½ minutes to beat Oregon State.

Deandre Ayton had 14 points and 10 rebounds and Rawle Alkins scored 11 points, nine in the second half, for the Wildcats (13-4, 3-1 Pac-12), coming off a loss Saturday at Colorado.

Tres Tinkle scored 18 points and Stephen Thompson Jr. had 14 for the Beavers (10-6, 2-2), who have won just once in Tucson in the last 35 years (2010).

At UCLA 83, Utah 64

Aaron Holiday scored 20 points and UCLA defeated Utah to stay atop the Pac-12 standings.

Holiday has been on a roll since league play began nearly two weeks ago, averaging 17.8 points. He also leads the Bruins (13-4, 4-1 Pac-12) in scoring with 19.4 points.

Kris Wilkes added 19 points for the Bruins, who shot 52 percent from three-point range. Holiday was perfect from long range, making all four of his shots.

David Collette scored 15 points and Justin Bibbins added 12 points for the Utes (10-6, 2-3).

Women’s games

Gonzaga 70, at Portland 56

Zykera Rice scored 14 points and Gonzaga used a balanced attack to beat Portland. Chandler Smith finished with 11 points and eight rebounds for the Zags (12-4, 5-0 WCC).

Gonzaga led 46-29 on rebounds and forced 20 Pilot (4-12, 0-5) turnovers for 13 steals and a 23-11 advantage in points off turnovers.

At No. 3 Louisville 100, No. 2 Notre Dame 67

Asia Durr scored 36 points, Myisha Hines-Allen had a career-high 31 and Louisville overwhelmed Notre Dame on both ends for a blowout victory in an Atlantic Coast Conference game.

The unbeaten Cardinals (19-0, 5-0) earned the program’s biggest victory since upsetting top-seeded Baylor in the 2013 NCAA tournament and snapped an 11-game losing streak against Notre Dame (15-2, 4-1).

Note

• USC will sit De’Anthony Melton for the remainder of the season after the sophomore was linked to the college basketball bribery case.