Alex Collins, A'Shawn Robinson

Arkansas running back Alex Collins (3) tries to get away from Alabama defensive lineman A'Shawn Robinson (86) in the backfield during the first half of an NCAA college football game on Saturday, Oct. 19, 2013, in Tuscaloosa, Ala. (AP Photo/Butch Dill)

Alabama star defensive tackle A'Shawn Robinson suffered an ankle injury during practice Monday, according to sources.

The injury is not believed to be serious, according to sources.

Widely viewed as one of the top defensive lineman in the country, Robinson posted 49 tackles as a sophomore last season, including 6.5 for a loss.