Here's the team most-likely to beat Alabama.
What could keep Alabama, the preseason No. 1 team in college football, out of the College Football Playoff?
Kirk Herbstreit has a team in mind.
The ESPN college football analyst said on College GameDay's preseason special that Auburn is probably the Crimson Tide's biggest "challenge" this season.
"I think the fact that the Iron Bowl is on the road for Alabama will be a great challenge. And I think (former Baylor QB Jarrett) Stidham is going to come in and do well," he said.
Herbstreit, though, added that if Alabama isn't in the College Football Playoff, it's probably due to something the Crimson Tide did to itself.
"They're going to have the personnel," Herbstreit says. "Are they going to have the leadership?"
Alabama opens its season on Saturday, Sept. 2 against Florida State. The game will be televised on ABC at 8 p.m. E.T.