The Georgia Bulldogs open their season Sept. 26 at Arkansas.
Depending on how voters approach it, that could crowd out some teams currently ranked.
The decreased field because of four Bowl Subdivision conferences initially deciding to delay play until the winter has been a boon in the early rankings for teams from the ACC and Group of Five conferences — like Marshall from Conference USA.
The Thundering Herd beat Appalachian State on Saturday to improve to 2-0 and grab a spot in the Top 25. App State was the only team to drop out of the Top 25, after being No. 23.
Marshall was last ranked in the final poll of the 2014 season. The Herd went 13-1 that season, reaching as high as No. 18 in the rankings, and won the Conference USA championship behind quarterback Rakeem Cato and running back Devon Johnson.
Miami moved up five spots after beating ACC rival Louisville on the road. The Cardinals hung on to a ranking, slipping six spots to No. 24.
No. 21 Pitt also jumped four spots with a convincing ACC victory against Syracuse. Georgia Tech faces Syracuse, following a 49-21 loss to No. 14 UCF.
No. 15 Oklahoma State dropped four spots after a sluggish performance in a victory against Tulsa. The Cowboys played much of the game without injured quarterback Spencer Sanders.
SEC — 8 (Nos. 2, 4, 5, 6, 8, 10, 16, 23).
ACC — 7 (Nos. 1, 7, 11, 12, 20, 21, 24).
Big 12 — 3 (Nos. 3, 8, 15).
American — 3 (Nos. 13, 14, 17).
Conference USA — 1 (No. 25).
Sun Belt — 1 (No. 19).
Independents — 2 (Nos. 18, 22).
RANKED vs. RANKED
No. 23 Kentucky at No. 8 Auburn. The opening week of SEC football doesn’t have a lot of really juicy matchups, but this cross-division game could be a tone-setter.
No. 24 Louisville at No. 21 Pitt. The Panthers can establish themselves as a team worthy of sticking around the Top 25 even when the other conferences become eligible.
No. 22 Army at No. 14 Cincinnati. The Black Knights have ripped through two opponents, but the Bearcats will provide a far more significant challenge.