The favorites have been clearly defined—just look at the top of any super-early rankings or Vegas title odds. These are the college football teams that, collectively, are expected to contend for conference titles and College Football Playoff bids.

But in college football, we've come to expect teams from outside the top tier to fight their ways into the discussion each season. Last year saw the likes of Florida, Iowa and North Carolina come seemingly out of nowhere to win their respective divisions and nearly crash the playoff party.

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