The Chicago Elite Classic is in its 5th year of existence. It has had a lot of great players play in the event, including Jabari Parker, Jahlil Okafor, Tyler Ulis, and Stanley Johnson, who are all current NBA players.
The latest to play in it this past weekend is Class of 2019 star R.J. Barrett. The 6-7 win out of Montverde Academy (FL), is ranked as the No. 1 prospect in his class by ESPN, while 247 Sports has him at No. 2.
In my opinion, barring injury, he is a future NBA player.