And then there were four. 

The college football season is entering Week 12, and four teams remain undefeated: No. 1 Oregon, No. 8 Indiana, No. 9 BYU and No. 18 Army

Previously undefeated Miami fell to Georgia Tech on Saturday. With that, it went from No. 4 to No. 12 in the AP Coaches Poll.

Will we see an undefeated regular season from one of the remaining four loss-less teams?

Let's check out the odds at FanDuel Sportsbook as of Nov. 11. 

Oregon to go undefeated in the regular season:

Yes: -460 (bet $10 to win $12.17 total)

Indiana to go undefeated in the regular season: 

Yes: +290 (bet $10 to win $39 total)

BYU to go undefeated in the regular season:

Yes: +300 (bet $10 to win $40 total)

Army to go undefeated in the regular season:

Yes: +890 (bet $10 to win $99 total)

Much of a team's chances to go undefeated depend on its schedule. 

Oregon has gotten through the tough part of its schedule, already notching wins over Ohio State, Illinois and Michigan. It has two games remaining against Wisconsin and Washington. Those two teams have a combined record of 10-9. 

Indiana does not have a ranked win this season, and after beating Michigan in Week 11, it will hit the road to take on No. 3 Ohio State on Nov 23. It won't be favored against the Buckeyes.

BYU — not traditionally a football powerhouse, similar to Indiana — has one ranked win, over then-No. 13 Kansas State back in September.

The Cougars eked past Utah in Week 11, and now have Kansas (3-6), Arizona State (7-2) and Houston (4-5) left on their docket. 

Lastly, one of the surprises of the college football season is Army. 

In order to go undefeated, it will need to first beat No. 10 Notre Dame on Nov. 23. After that, the Black Knights have UTSA on Nov. 30 and rival Navy on Dec. 14. 

Notre Dame has already played undefeated-spoiler once this season. Three weeks ago, Navy entered its matchup with the Fighting Irish at 6-0, before losing 51-14. 

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