AP Top 25 live updates: Poll shakeup looms after USC stuns Ohio State

No. 1 Miami dug deep to hold off North Carolina and keep its undefeated record intact, but No. 2 Ohio State wasn’t as fortunate. The Buckeyes fell to USC in the biggest upset of the week, setting up another major shakeup in the AP Top 25.Seven ranked teams lost, potentially creating a domino effect in the latter half of the rankings. South Carolina, USC and Iowa all made strong cases to enter the poll.Plenty of changes could be in store when the latest poll drops at 2 p.m. Eastern. And this poll could set the table for the initial College Football Playoff rankings coming out Tuesday night!Stick around for projections, voter Q to avoid regional bias, for or against; to pay attention to head-to-head results; and to make significant changes if desired.Down goes Ohio StateBy ERIC OLSONFor the fourth straight week, a No. 1 or 2 team lost to an unranked opponent, and a total of seven Top 25 teams lost in Week 9.The biggest loss Saturday belonged to No. 2 Ohio State, which was without injure