EUGENE, Ore. — Oregon opened the regular season with a 13-game winning streak. They closed it with seven straight victories.

The Ducks may have stumbled in the middle, but reserve guard Jason Calliste says the Ducks still belong in the national conversation — especially after a 64-57 win over No. 3 Arizona in the regular-season finale on Saturday.

“We can be one of the best teams in the country,” he said. “Doesn’t matter who we’re playing.”

Calliste made the go-ahead jumper and free throw with 4:22 left and finished with 18 points for the Ducks, who trailed by as many as 12 points.

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“I just didn’t want to lose,” he said. “Wasn’t time to go home yet.”

Johnathan Loyd added 16 points for the Ducks (22-8, 10-8 Pac-12) who greatly improved their chances of a bid to the NCAA tournament. Last season Oregon won the conference tournament and advanced all the way to the regional semifinals.

Aaron Gordon scored 21 for the Wildcats (28-3, 15-3), who had already clinched the Pac-12 regular-season title.

The Ducks won 13 straight to start the season and got ranked as high as No. 10, but then they lost five straight to tumble out of the poll and fall in the Pac-12 standings.

Other games

At Oregon St. 78, Arizona St. 76 (OT)

Roberto Nelson scored six of his 15 points in overtime, including the go-ahead free throw with 2:50 remaining, to lead the Beavers to the victory.

Jahii Carson had 24 points and Jonathan Gilling added 20 for the Sun Devils, who shot 41 percent to Oregon State’s 47.5 percent and missed an opportunity to lock up the No. 3 seed for the conference tournament.

At Stanford 61, Utah 60

Dwight Powell made a go-ahead free throw with 36.1 seconds remaining after the Cardinal missed seven consecutive from the line late, and it held on to beat the Utes.

Chasson Randle delivered down the stretch on the way to 22 points and forced a turnover with 1.8 seconds left as Utah couldn’t get a shot off in the waning seconds.

At California 66, Colorado 65 (OT)

Justin Cobbs made a pair of free throws with 20.8 seconds left in overtime, and the Golden Bears kept alive their slim NCAA tournament hopes.

The Golden Bears scored seven points in overtime, all on free throws.

Cobbs finished with 21 points and four assists.

Pac-12 men
Team Conf. Overall
Arizona 15-3 28-3
UCLA 12-6 23-8
Arizona St. 10-8 21-10
Colorado 10-8 21-10
Oregon 10-8 22-8
Stanford 10-8 19-11
California 10-8 19-12
Washington 9-9 17-14
Utah 9-9 20-10
Oregon St. 8-10 16-14
WSU 3-15 10-20
USC 2-16 11-20
Saturday’s resultsWashington 82, USC 75Oregon 64, Arizona 57Oregon St. 78, Ariz. St. 76 (OT)Stanford 61, Utah 60California 66, Colorado 65 (OT)Washington St. 73, UCLA 55