The Aggies cruised past Samford, setting the stage for a crucial showdown with Texas in Austin. With just one week left in the regular season, chances to improve résumés are dwindling, as is the field of teams that have a realistic shot at making the CFP.

Here’s a breakdown of what happened in Week 13 and how it might unfold when the committee ranks the teams Tuesday:

Five teams in the CFP top 25 rankings lost Saturday, with No. 15 USC being the highest-rated team to drop. The Trojans lost to an old Pac-12 foe, No. 7 Oregon on the road, 42-27. No. 22 Missouri had quarterback Beau Pribula back under center after missing the last few weeks with an ankle injury. Still, the Tigers fell to No. 8 Oklahoma 17-6, further solidifying the Sooners’ place within the CFP field.

Perhaps the biggest shock of the week was No. 16 Georgia Tech losing to unranked Pittsburgh. The Panthers defeated the Yellow Jackets 42-28 and dominated their conference rival. No. 21 Illinois will most likely drop out of the top 25 after its 27-10 loss to unranked Wisconsin.

No. 23 Houston lost to in-state rival TCU 17-14; the Cougars missed two field goals that could have put them ahead and secured their ninth win of the season.

Top-ranked Ohio State easily defeated Rutgers 42-9, while No. 3 A&M did the same against Samford, rolling past the Bulldogs 48-0.

No. 4 Georgia cruised past 1-10 Charlotte, 38-3. No. 2 Indiana and No. 5 Texas Tech were idle in Week 13.

As the Aggies focus on Texas in Week 14, they control their own destiny for a first-round bye. A&M must beat the Longhorns, then win the SEC championship to guarantee a top-four seed.

With Texas fighting for its season — and the chance to potentially ruin the Aggies’ perfect season — A&M should prepare for a battle.

Because of various tiebreakers, the only way the Aggies are guaranteed to play for their first SEC title and earn a first-round bye is by winning all their remaining games. Their main competitors will be Alabama, Georgia and Ole Miss, as each has only one loss in conference play.

We’ll see what the selection committee thinks on Tuesday, but here’s our prediction for the CFP.

*Tulane will be the Group of Five representative after winning the American Conference.

Reach Texas A&M beat reporter Tony Catalina via email at Anthony.Catalina@statesman.com.