Rookie Watch: Best of 20

Originally Published: February 22, 2013
By David Thorpe | Scouts Inc.
Harrison Barnes Rocky Widner/Getty ImagesGolden State's Harrison Barnes has all the tools to be an offensive and defensive machine in the NBA.

Two weeks ago, we rated the youngest age group in the NBA, teenagers all. Today, we continue our series ranking the rookie class by age with the 20-year-olds, who all have long careers ahead of them if they get some breaks. As a reminder, we are rating a player purely on the level of his ceiling -- how good he can ultimately be if given the perfect situation.