Battling for a backup spot with the Dallas Cowboys, running back Bo Scarbrough had a setback on Saturday night.

The former Alabama running back exited a preseason game against the Bengals with a left hip injury. It is unclear how severe the injury is. Scarbrough has been battling Rod Smith and Darius Jackson for the backup spot behind starter Ezekiel Elliott, although it has appeared that Smith will be the No. 2 running back.

Scarbrough had four carries for minus-two yards before exiting. In the Cowboys’ preseason opener against the San Francisco 49ers on Aug. 9, he had nine carries for 33 yards and a touchdown.

The former Crimson Tide back was selected by the Cowboys in the seventh round of the 2018 NFL Draft. While he may be as low as No. 3 on the depth chart at running back when the season begins, it appears that Scarbrough should be in a good position to make Dallas’ roster. Although it is unclear how long he will be out due to injury.

Scarbrough played three seasons at Alabama before deciding to forego his senior season. He had 1,512 career yards and 20 touchdowns. In 2017, he had 596 yards and eight touchdowns while helping the Tide win the national championship.

The Cowboys open their season against the Carolina Panthers on Sept. 9. It should be clearer later in the week if Scarbrough will be available to play in the opener, or if he will be missing an extended period of time.