One week after losing one skill player to a knee injury, Alabama may now have a second one on its hands.

Freshman running back Bo Scarbrough sustained a knee injury during the Crimson Tide’s first spring scrimmage Friday, coach Nick Saban announced. The severity of the injury was unknown at the time of Saban’s news conference, immediately following the scrimmage.

“You've got to take MRIs and do all those things, so I don't speculate on these kind of injuries,” Saban said. “We'll see, and we'll let you know when we find out.”

Scarbrough’s injury, significant or not, is the third major storyline for an Alabama running back this spring. In January, Altee Tenpenny left the program with plans to transfer elsewhere, and Tyren Jones was dismissed earlier this week.

Before the injury, Scarbrough rushed for 36 yards and two touchdowns on 16 carries in the scrimmage. (Scrimmage statistics include 11-on-11, situational drills, red area, goal line and two-minute offense.)

“Bo was doing pretty well,” Saban said. “But we've had a lot of injuries, suspensions, and lost some people at that position. So what seemed like a pretty strong position depth-wise has gotten a little thin.”

Scarbrough, originally a member of the team’s 2014 recruiting class though he did not enroll at the school during the fall due to academic ineligibility, was reportedly carted off the field near the end of the scrimmage. He did not return.

If the injury is serious, it would not be the first one for Scarbrough. As a high school player at Northridge, Scarbrough sustained season-ending injuries three times: broken ankle (freshman season), torn ACL (sophomore) and high ankle sprain (junior). He later transferred to IMG Academy in Florida for his senior year in 2013.

Wide receiver Cam Sims, a rising sophomore, tore his ACL during last Saturday’s spring practice.

Damien Harris, the No. 1-rated running back in the nation in the 2015 class according to Rivals who will join the team this summer, took to Twitter to share his well wishes for Scarbrough.

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