Joel Klatt isn’t completely sold on Alabama anymore.

FOX Sports 1’s official Twitter account posted a video of its college football analyst detailing three reasons why the top-ranked Crimson Tide are more vulnerable than he previously thought. Klatt conceded Alabama is still his favorite to win the national championship, though.

He cited a Crimson Tide’s secondary that has looked suspect at times this year, a problem exacerbated by the loss of safety Eddie Jackson. Klatt also expressed doubts in quarterback Jalen Hurts’ ability to win games through the air.

His final point: another undefeated team has the tools to take advantage of Alabama’s weak spots.

“The Crimson Tide may be my favorite to win it all,” Klatt said, “but I’m just not as sure as I used to be.”