LOS ANGELES — A season of frustratingly unfortunate events for USC had led here, to this nightmarish crescendo at the one-minute mark Saturday, in a must-win matchup.

Through a roller-coaster afternoon, the Trojans had navigated one wave after another, riding several hot streaks and surviving the cold ones, knowing full well that their NCAA tournament hopes hinged on a win over Oregon, one of the Big Ten's worst teams.

All that stress seemed to subside as USC took a six-point lead with 70 seconds remaining. Any rational onlooker would assume that the Trojans had held on for good, dispatching of the Ducks.

But then Oregon scored on a layup. It stole the ball back. And it hit a 3-pointer.

USC clung to a one-point lead as freshman Alijah Arenas stepped back for a jumper that clanged away. Kam Woods missed a tip. Then, Oregon got the ball back and drew a foul.

Two free throws from Oregon's Nate Bittle dealt USC one final, unbelievable blow to their Saturday — and perhaps their season — handing the Trojans a devastating 71-70 loss.

Their hopes of making the NCAA tournament aren't necessarily dead as of Saturday. Four games still remain for the Trojans to build their case before the Big Ten tournament. But two of those come against UCLA and another against Nebraska, one of the best teams in the Big Ten this season.

USC had hoped Chad Baker-Mazara's return from injury would help lift them to a victory Saturday. Baker-Mazara led all scorers with 21, but he also fouled out late, during that final possession.

Arenas struggled most of the afternoon, before scoring 11 in the second half. But it was his turnover in the final seconds that ultimately handed Oregon the win

Baker-Mazara hadn't played since the beginning of February, and in back-to-back losses to Illinois and Ohio State, the Trojans undoubtedly missed his spark. If not for a late game winner in State College from Arenas, they would've dropped all three games played without Baker-Mazara.

The circumstances ultimately left USC in a must-win scenario Saturday, if it hoped to continue clinging to the edge of the NCAA tournament bubble. Oregon had, on the other hand, spent most of the season in the Big Ten cellar. It entered Saturday's matinee with losses in 11 of its last 12 games.

There was no such urgency in Baker-Mazara upon his return. The sixth-year senior sang and danced his way through warm-ups, before opening the game on a stationary bike in the corner of the arena.

But upon checking in, he jolted the Trojans offense to life with 13 straight points.

The boost Baker-Mazara provided eventually ran out of gas. USC hit just three of its final 14 shots before halftime, and Oregon stormed out in front.

The Ducks did the same in the second half, albeit in much more devastating fashion, leaving USC with a much harder road ahead.

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