80% of NBA draft picks since 2003 have been Rivals150 players. More than 70% have been four or five-star players. Especially in hoops, recruiting rankings are right a lot more than they're wrong.
https://basketballrecruiting.n.riva...numbers-recruiting-rankings-and-the-nba-draft
https://basketballrecruiting.n.riva...numbers-recruiting-rankings-and-the-nba-draft