Oklahoma State sophomore running back Herschel Sims has been dismissed from the team by coach Mike Gundy, the program announced on Friday.
Gundy cited a violation of team rules in a statement.
Sims, a native of Abilene, Texas, was the top recruit in Oklahoma State's 2011 class and the No. 124 overall prospect in the 2011 ESPN 150. He was the nation's No. 10 running back and carried the ball 31 times for 242 yards and two touchdowns last season.