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The day after Utah produced the most remarkable comeback of the school's Pac-12 era against South rival USC, the other four teams in the division were involved in wild adventures of their own against North opponents in their conference openers.

Colorado upset Oregon with an end-zone interception in the last minute. Arizona State topped California with the help of a defensive touchdown, while allowing more than 600 yards. UCLA lost to Stanford after leading for nearly 45 minutes of scoreboard time. And Arizona twice tied Washington with touchdowns in the last five minutes, only to lose in overtime.

Wow. This can only mean that more drama is ahead for the No. 18 Utes, who face Cal and Arizona in their next two games. A look back at the weekend:

Utah 31, USC 27

The most amazing aspect of this game is that after USC took a 24-10 lead, Utah possessed the ball only three times in the last 25 minutes. That's because each offense sustained such long drives. The difference was the Utes scored touchdowns on all of their remaining drives, covering 85, 75 and 93 yards. The Trojans' two possessions (not counting the final play) resulted in a field goal and a punt from the Ute 37, following a critical penalty.

And then the Utes drove for the winning score, via Troy Williams' 18-yard pass to Tim Patrick with 16 seconds remaining. Utah and USC combined for 922 total yards in one of four Pac-12 games that topped the 900-yard mark.

Colorado 41, Oregon 38

Colorado deserved this victory, after coming so close to beating some of the conference's top-tier teams in recent years. The Buffaloes' Steven Montez passed for 333 yards and ran for 135 yards, replacing injured quarterback Sefo Liufau.

Like Utah, which needed only a field goal to force overtime, Oregon played aggressively on its last drive. But in this case, Ahkello Witherspoon intercepted a pass in the end zone with 48 seconds left, on a first-and-goal play from the Colorado 7.

Colorado had posted 602 total yards until losing 9 yards on its last, clock-killing possession. The two teams totaled 1,101 yards.

Stanford 22, UCLA 13

UCLA had led since late in the first quarter at the Rose Bowl, but allowed Stanford to drive 70 yards for the go-ahead touchdown with 24 seconds remaining. Stanford quarterback Ryan Burns passed for 66 yards on the winning drive after having thrown for 71 yards to that point, when the Cardinal trailed 13-9.

Stanford added a 42-yard fumble return on the game's final play.

Stanford's Christian McCaffrey touched the ball only once on the last drive, but he rushed for 138 yards against a UCLA defense that held BYU's Jamaal Williams to 28 yards on 14 carries the previous week.

Washington 35, Arizona 28 (OT)

The teams combined for 660 rushing yards and neither led by more than seven points. Arizona, having switched to quarterback Brandon Dawkins, tied the game twice in the last five minutes with touchdown drives of 66 and 75 yards, while allowing a 55-yard TD run in between. But the Wildcats couldn't match Washington's overtime touchdown.

Arizona State 51, California 41

Cal led the Sun Devils for 45-plus minutes, only to give up 31 points in the fourth quarter.

Davis Webb passed for 478 yards and the Bears racked up 637 total yards, but ASU's defense responded with two interceptions in the fourth period, including one that was returned for a touchdown. The Sun Devils added a return of an onside kick for another score. ASU posted 454 yards, pushing the two-team total to 1,091.

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