"We hate to see any player get injured, but Dalvin has done everything the right way since he's been here," Saban said. "It's just something that's unfortunate that happens in any sport."
Tomlinson, who redshirted his first year on campus in 2012 because of a knee injury he suffered in high school, will be out four or five months rehabbing the injury.
The former four-star prospect from Georgia was listed as the backup to starting defensive end Jeoffrey Pagan. He made four tackles in the No. 1 Crimson Tide's season-opening win over Virginia Tech.
"He was doing a fantastic job for us," Saban said. "He played well in the first game rotating in."
Tomlinson, one of Alabama's most athletic defensive linemen, was expected to play a role against No. 6 Texas A&M (2-0) this weekend, helping to combat the Aggies' up-tempo offense with his speed and quickness.