Karl-Anthony Towns is the best rookie, but that won't win him ROY

Karl-Anthony Towns' evolution into top pick (4:30)

Hannah Storm visits Karl-Anthony Towns in his hometown of Piscataway, New Jersey, to find out how Towns became the first overall pick in the NBA draft. (4:30)

ESPN's Summer Forecast series continues with the unveiling of the rookie of the year (ROY) rankings for the 2015-16 season. Trying to predict award winners is always a funny proposition, as there's a dissonance between who the voters think will win the award and who they think should win the award -- two radically different concepts. You can also throw in a sub-interpretation of "should," meaning which rookie will ultimately be the best player in the draft class.