Greg Bryant is maturing as a running back
Playing running back in high school is very different from playing the position in college. In some ways, uber talented high school running backs are at disadvantage when they transition to the college game. In high school, elite running backs often don't have to learn the nuances of the position, they simply out run or out hit everyone. In D1 football they can't do this.
A running back in college needs to be more than a great athlete. Understanding how to read and set up blocks is critical.