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Berkeley, Calif. • Justin Cobbs hit a step-back jumper with 0.9 seconds left, and California stunned No. 1 Arizona 60-58 on Saturday night to hand the Wildcats their first loss of the season.

Cobbs dribbled to his left and beat Nick Johnson, then pulled up in front of a defender to sink the winning shot that sent a raucous crowd at Haas Pavilion spilling onto the court.

Cal coach Mike Montgomery and security had to usher fans away before the final play.

Gabe York's full-court pass was knocked down to give the Golden Bears (15-7, 6-3 Pac-12) their first victory over a top-ranked opponent in more than 20 years.

The last time was Jan. 30, 1994, when they beat UCLA 85-70 at the Oakland Coliseum.

Arizona (21-1, 8-1) had been one of just three unbeaten teams left in Division I.

Now the only unbeatens left are second-ranked Syracuse (21-0), which beat No. 17 Duke 91-89 in overtime Saturday, and No. 4 Wichita State (23-0), which beat Evansville 81-67.

Stanford 76, Arizona St. 70

Dwight Powell matched his season high with 28 points, leading the Cardinal to a win Saturday in Stanford, Calif.

Chasson Randle scored 15 of his 21 points in the second half for the Stanford (14-7, 5-4 Pac-12), which was coming off a 60-57 loss to top-ranked Arizona on Wednesday.

Jahii Carson scored 24 points to lead the Sun Devils (16-6, 5-4), who had their three-game winning streak snapped. Jermaine Marshall added 22 points.

Oregon 78, USC 66

Joseph Young scored 21 points, including a key 3-pointer that touched off a 12-0 Oregon run midway through the second half, as the Ducks won Saturday night in Eugene, Ore.

Jason Calliste had 18 points for Oregon (15-6, 3-6 Pac-12), which led by as many as 17. The Ducks had lost six of their last seven games after opening the season with 13 straight wins and climbing as high as No. 10 in the AP rankings.

The Ducks had 16 steals, one shy of the school record. Young had a career-high six.

Byron Wesley finished with 19 points for the Trojans (10-12, 1-8 Pac-12), who fell to the bottom of the Pac-12 standings and who haven't managed to beat the Ducks in seven straight meetings. —

Pac-12 standings

Conf. All

W L Pct. W L Pct.

Arizona 8 1 .889 21 1 .955

UCLA 6 2 .750 17 4 .810

California 6 3 .667 15 7 .682

Arizona St. 5 4 .556 16 6 .727

Colorado 5 4 .556 16 6 .727

Stanford 5 4 .556 14 7 .667

Wash. 5 4 .556 13 9 .591

Oregon St. 4 4 .500 12 8 .600

Oregon 3 6 .333 15 6 .714

Utah 3 6 .333 14 7 .667

Wash. St. 2 7 .222 9 12 .429

USC 1 8 .111 10 12 .455

Saturday's games

Cal 60, No. 1 Arizona 58

Stanford 76, Arizona State 70

Oregon 78, USC 66

Wash. St. 72, Washington 67

Colorado 79, Utah 75