There are a number of college football teams that are still undefeated, but those same teams haven't reached the gauntlet of their schedule yet, and they haven't gone against tough competition yet.
Then there are those teams that haven't entered conference play and will most likely see a lot of letdowns as the year goes along.
The usual suspects—Oklahoma, Alabama, LSU, Stanford and Boise State—are sitting atop the AP Poll and will likely stay there for most of the year. Those teams will, without a doubt, finish ranked in the Top 25.
These teams, however, will not.