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Big Ten football power rankings after Week 4 - USC gets humbled

Week 4 action in the Big Ten reshuffled the conference hierarchy as several contenders separated themselves from the rest of the pack. Indiana maintained the top spot at 4-0 following a hard-fought battle with Northwestern, while Ohio State secured the second position behind standout performances from Jeremiah Smith.

Oregon climbed to third after humbling a struggling USC squad that dropped to 4-1. Elsewhere, UCLA moved to 4-0 under Bob Chesney, and Iowa claimed a major victory to bolster its undefeated record.

Further down the rankings, Wisconsin orchestrated a massive comeback win against Penn State after erasing an early 17-point deficit, while Michigan suffered an exposure against a more aggressive opponent. The Badgers capitalized on second-half adjustments to secure a crucial win, leaving the Nittany Lions to question their ability to finish tight contests.

Meanwhile, the Wolverines fell out of the top tier after their elite defense failed to bail out a subpar offensive showing, demonstrating that several mid-tier programs still have much to prove as the season progresses.

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