NEW YORK—By staying away from the cupcakes, Southern California earned itself a slim new ranking.

No. 1 always seems to fit USC.

Southern California jumped two spots to No. 1 in The Associated Press Top 25 on Tuesday, rewarded by voters for opening the season with a dominant performance on the road against a BCS conference opponent.

Georgia and Ohio State, the preseason Nos. 1 and 2, respectively, started their seasons with glorified scrimmages at home against FCS (formerly I-AA) teams. USC, however, traveled across country to face Virginia 1 and could not h...

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