The Bulldogs, after a surprising 21-10 loss at South Carolina, plummeted 14 spots to No. 23, while the Hurricanes 34-29 losers at Washington dropped eight places to No. 12 in The Associated Press Top 25 college football poll.
Even with a loss, the Fighting Irish improved two positions to No. 21 after balloting by the 71 sports writers and broadcasters on the AP panel.
Nebraska collected 41 first-place votes and 1,740 points, with Florida State receiving 26 first-place votes and 1,720 points. Last week's point margin was 11.
Michigan and Wisconsin each had a first-place vote and Texas had two first-place votes.
The Hokies, who beat East Carolina 45-28 last Thursday, improved two places to No. 8, while the Huskies moved up six spots to No. 9 with their win over the Hurricanes.
In last week's poll, Alabama fell from No. 3 to No. 13 after losing to UCLA. This week, the Crimson Tide fell two more spots after a 28-10 win over Vanderbilt.
Auburn, 2-0 after a 35-27 win over Mississippi, cracked the Top 25 for the first time since the 1998 preseason poll. The Rebels dropped out.
In the USA Today/ESPN coaches poll, the top five were: Nebraska, Florida State, Michigan, Florida and Wisconsin.
In top games this week, Michigan visits UCLA, Florida visits Tennessee and Purdue is at Notre Dame.
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