A freak injury will prevent one of Alabama's young defensive backs from being able to contribute at all the rest of this season.

Freshman cornerback Jalyn Armour-Davis, who got hurt during pre-game warmups on Saturday, has a torn knee ligament and will miss the rest of the season, AL.com has learned.

The Mobile native is scheduled to undergo surgery later this week, according to a source.

While Armour-Davis wasn't expected to play much this year, it's an unfortunate setback for a promising young player.

The former four-star recruit impressed behind the scenes during the Crimson Tide's summer workouts and probably would have gotten playing time against Arkansas State on Saturday if not for the injury.

"He has made very nice progress," Alabama coach Nick Saban said of Armour-Davis this summer. "He's a fine young man. He's got really good ability. He's a hard worker. He's bright. He's been able to learn and make improvement over the summer and hopefully he'll continue that development and be able to contribute to the team this fall."