Running back Martinez Syria was dismissed from the ISU football team after a violation the team policies, Iowa State announced on Wednesday.
Martinez appeared in five games for the Cyclones last season as a true freshman. He ran for 47 yards on 20 carries.
The Humble, Texas, native was rated the 101st running back in the nation by ESPN and the 85th by Scout when he was recruited in 2013-14.
The ISU running back pool will take another hit with an already thin depth chart. Redshirt sophomore Tyler Brown may get the bulk of playing time, having the most experience out of the current running backs.