The first 12-team field in College Football Playoff history will be revealed on Sunday afternoon.

Sunday's selection show will let us know which seven teams landed in the field with at-large berths and what the full bracket lookslile.

Most of the 12 teams are known based on the latest rankings that were released on Tuesday, but the order of the squads is still up in the air and will be determined by the conference championship game results.

CFB Playoff Selection Show Info

Date: Sunday, December 8

Start Time: Noon ET

TV: ESPN

Live Stream: ESPN.com and ESPN app

The 12-team field will be revealed right at the start of the selection show.

There's only one massive debate regarding the field at the moment.

The Alabama Crimson Tide are likely to get in no matter what, but it could come at the expense of the SMU Mustangs.

SMU needs to win the ACC Championship Game to avoid a potential drop from No. 8 down past Alabama at No. 11. The Miami Hurricanes fell six positions, one spot behind Bama, following their Week 14 loss to the Syracuse Orange.

The Mustangs are after one of the automatic bids handed out to the four highest-ranked conference champions.

The Boise State Broncos locked up one of those bids with Friday's win in the Mountain West Championship Game. Boise State will finish ahead of the Big 12 champion, so it will take the No. 4 seed.

The Big 12 champion will likely slot into the No. 12 seed as an automatic qualifier.

The order of the rest of the seeds will be determined by the results in the Big Ten and SEC Championship Games.

The Oregon Ducks and Texas Longhorns enter the weekend at No. 1 and No. 2. If both teams win, their order will remain the same and the Notre Dame Fighting Irish could benefit the most.

Notre Dame needs Oregon and Texas to win to clear its path to the No. 5 seed. The Fighting Irish will likely jump the Penn State Nittany Lions if they lose to Oregon in the Big Ten Championship Game.

How far the Big Ten and SEC Championship Game losers fall remains a question, and that might be determined by how close both games are.

The other question with the bracket is if teams from the same conference would play each other in the first round.

With the way the rankings are set, three Big Ten and SEC teams are in line to earn at-large berths, but there is a way to keep the conference mates apart from each other if the committee opts to do that.